10,000,000,000,000

10,000,000,000,000 (ten trillion on the short scale; ten billion on the long scale; ten thousand billion; ten million million) is the natural number following 9,999,999,999,999 and preceding 10,000,000,000,001. It is known as 10000 arab, 100 kharab, 10 lakh crore, or 1 nil in the Indian numbering system.

Properties and usage

10,000,000,000,000 has the following properties and usage:

In mathematics

• It is even, composite, abundant, polite, practical, frugal, and regular. It is also a perfect power and a harshad number.
• It is written in scientific notation as 1 × 10¹³ or 10¹³ (1E+13 or simply 1E13 in E notation).
• It has a total of 196 divisors (182 even, 14 odd). All divisors are displayed below:

1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3125, 3200, 4000, 4096, 5000, 5120, 6250, 6400, 8000, 8192, 10000, 10240, 12500, 12800, 15625, 16000, 20000, 20480, 25000, 25600, 31250, 32000, 40000, 40960, 50000, 51200, 62500, 64000, 78125, 80000, 100000, 102400, 125000, 128000, 156250, 160000, 200000, 204800, 250000, 256000, 312500, 320000, 390625, 400000, 500000, 512000, 625000, 640000, 781250, 800000, 1000000, 1024000, 1250000, 1280000, 1562500, 1600000, 1953125, 2000000, 2500000, 2560000, 3125000, 3200000, 3906250, 4000000, 5000000, 5120000, 6250000, 6400000, 7812500, 8000000, 9765625, 10000000, 12500000, 12800000, 15625000, 16000000, 19531250, 20000000, 25000000, 25600000, 31250000, 32000000, 39062500, 40000000, 48828125, 50000000, 62500000, 64000000, 78125000, 80000000, 97656250, 100000000, 125000000, 128000000, 156250000, 160000000, 195312500, 200000000, 244140625, 250000000, 312500000, 320000000, 390625000, 400000000, 488281250, 500000000, 625000000, 640000000, 781250000, 800000000, 976562500, 1000000000, 1220703125, 1250000000, 1562500000, 1600000000, 1953125000, 2000000000, 2441406250, 2500000000, 3125000000, 3200000000, 3906250000, 4000000000, 4882812500, 5000000000, 6250000000, 7812500000, 8000000000, 9765625000, 10000000000, 12500000000, 15625000000, 16000000000, 19531250000, 20000000000, 25000000000, 31250000000, 39062500000, 40000000000, 50000000000, 62500000000, 78125000000, 80000000000, 100000000000, 125000000000, 156250000000, 200000000000, 250000000000, 312500000000, 400000000000, 500000000000, 625000000000, 1000000000000, 1250000000000, 2000000000000, 2500000000000, 5000000000000, 10000000000000

• The sum of all its divisors, including itself, is 24,998,474,116,998.
• It has an Euler totient of 4,000,000,000,000, and an aliquot sum of 14,998,474,116,998.
• There are a total of 346,065,536,839 positive primes less than it.
• Below is the list of basic calculations of 10,000,000,000,000:

	Multiplication $\text{10,000,000,000,000 }\times \text{ x}$	Division $\text{10,000,000,000,000 }÷\text{ x}$	Exponentiation ${\text{10,000,000,000,000}}^{\text{x}}$	nth root $\sqrt[\text{x}]{\text{10,000,000,000,000}}$
2	20,000,000,000,000	5,000,000,000,000	1026	≈3,162,277.6602
3	30,000,000,000,000	3,333,333,333,333.3	1039	≈21,544.3469
4	40,000,000,000,000	2,500,000,000,000	1052	≈1,778.2794
5	50,000,000,000,000	2,000,000,000,000	1065	≈398.1072
6	60,000,000,000,000	1,666,666,666,666.6	1078	≈146.7799
7	70,000,000,000,000	1,428,571,428,571.428571	1091	≈71.9686
8	80,000,000,000,000	1,250,000,000,000	10104	≈42.1697
9	90,000,000,000,000	1,111,111,111,111.1	10117	≈27.8256
10	100,000,000,000,000	1,000,000,000,000	10130	≈19.9526

In economy

10 trillion Zimbabwean Dollars (2008)

• 10,000,000,000,000 was used in Banknotes of Zimbabwe: 2008 banknote series circulated due to the intense hyperinflation in Zimbabwe during the 2008-2009 period.
• 39,375,254,020,492 dollars of US debt as of July 5, 2026.

Selected 14-digit numbers (10,000,000,000,001–99,999,999,999,999)

10,000,000,000,001 to 19,999,999,999,999

• 10,000,000,000,037 : smallest 14-digit prime number
• 10,000,002,437,316 : smallest 14-digit triangular number, 4,472,136th triangular number
• 10,153,507,819,457 : 177th Markov number
• 10,445,360,463,871 : 38th Woodall number
• 10,610,209,857,723 : 64th Fibonacci number
• 11,038,251,159,312 : number of 51-bead necklaces (turning over is allowed) where complements are equivalent
• 11,111,111,111,111 : repunit
• 11,258,999,739,560 : number of 50-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 13,046,940,568,625 : number of series-reduced planted trees with 48 nodes
• 13,432,403,613,621 : number of secondary structures of RNA molecules with 37 nucleotides
• 13,933,569,346,707 : 32nd Motzkin number
• 13,974,537,376,800 : 75th superabundant number
• 14,173,019,355,266 : 178th Markov number
• 14,235,090,298,445 : 179th Markov number
• 14,622,039,889,385 : 180th Markov number
• 15,988,960,048,321 : 181st Markov number
• 17,167,680,177,565 : 65th Fibonacci number, 182nd Markov number
• 18,367,353,072,152 : 26th Catalan number
• 18,632,716,502,400 : 76th superabundant number
• 18,696,424,380,481 : 183rd Markov number
• 19,374,186,136,140 : 41st Wedderburn-Etherington number
• 19,696,509,177,019 : 16th alternating factorial

20,000,000,000,000 to 29,999,999,999,999

• 20,922,789,888,000 = 16!
• 20,922,789,888,136 : 16th factoriangular number
• 21,246,581,423,810 : 184th Markov number
• 21,300,003,689,580 : 36th Pell number
• 21,440,476,741,631 : 39th Woodall number
• 21,651,955,485,304 : number of 52-bead necklaces (turning over is allowed) where complements are equivalent
• 22,076,468,764,192 : number of 51-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 22,222,222,222,222 : repdigit
• 22,592,065,572,301 : 185th Markov number
• 24,351,056,611,103 : number of (unordered, unlabeled) rooted trimmed trees with 39 nodes
• 26,500,373,448,281 : 186th Markov number
• 27,673,060,569,305 : number of series-reduced planted trees with 49 nodes
• 27,777,890,035,288 : 66th Fibonacci number
• 27,949,074,753,600 : 77th superabundant number

30,000,000,000,000 to 39,999,999,999,999

• 30,901,824,368,813 : 187th Markov number
• 31,801,503,090,601 : 188th Markov number
• 32,607,253,879,200 : 78th superabundant number
• 33,333,333,333,333 : repdigit
• 33,843,022,209,066 : number of secondary structures of RNA molecules with 38 nucleotides
• 36,332,699,889,481 : 189th Markov number
• 38,596,477,083,550 : number of square (0,1)-matrices without zero rows and with exactly 12 entries equal to 1

40,000,000,000,000 to 49,999,999,999,999

• 40,002,464,776,083 : 33rd Motzkin number
• 40,081,787,109,376 : 25th automorphic number
• 42,486,822,491,890 : number of 53-bead necklaces (turning over is allowed) where complements are equivalent
• 43,303,843,861,744 : number of 52-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 43,520,999,798,747 : 50th repfigit
• 43,980,465,111,039 : 40th Woodall number
• 44,444,444,444,444 : repdigit
• 44,945,570,212,853 : 67th Fibonacci number, 190th Markov number
• 46,127,828,641,049 : 191st Markov number
• 46,384,328,517,112 : 42nd Wedderburn-Etherington number
• 47,574,827,600,981 : 21st Schröder–Hipparchus number
• 48,795,987,025,021 : 192nd Markov number

50,000,000,000,000 to 59,999,999,999,999

• 51,011,754,393,600 = 26!!
• 51,422,757,785,981 : 37th Pell number, 193rd Markov number
• 55,555,555,555,555 : repdigit
• 55,898,149,507,200 : 79th superabundant number
• 57,850,602,535,042 : 194th Markov number
• 58,734,306,828,191 : number of series-reduced planted trees with 50 nodes
• 59,918,212,890,625 : 26th automorphic number

60,000,000,000,000 to 69,999,999,999,999

• 60,941,642,779,903 : number of (unordered, unlabeled) rooted trimmed trees with 40 nodes
• 65,082,055,350,517 : 195th Markov number
• 65,214,507,758,400 : 80th superabundant number, 19th superior highly composite number
• 66,666,666,666,666 : repdigit
• 67,082,333,460,610 : 196th Markov number
• 68,275,077,901,156 : number of posets with 15 unlabeled elements
• 69,533,550,916,004 : 27th Catalan number

70,000,000,000,000 to 79,999,999,999,999

• 72,723,460,248,141 : 68th Fibonacci number
• 73,224,462,646,361 : 197th Markov number
• 74,596,893,730,427 : 51th repfigit
• 77,777,777,777,777 : repdigit

80,000,000,000,000 to 89,999,999,999,999

• 80,902,026,460,669 : 198th Markov number
• 82,561,235,448,866 : 199th Markov number
• 83,400,061,453,514 : number of 54-bead necklaces (turning over is allowed) where complements are equivalent
• 84,973,577,874,916 : number of 53-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 85,349,327,734,485 : number of secondary structures of RNA molecules with 39 nucleotides
• 88,888,888,888,888 : repdigit

90,000,000,000,000 to 99,999,999,999,999

• 90,159,953,477,631 : 41st Woodall number
• 93,139,301,545,921 : 200th Markov number
• 97,295,849,958,669 : 52nd repfigit
• 97,568,760,404,309 : 201st Markov number
• 97,821,761,637,600 : 81st superabundant number
• 99,999,999,999,973 : largest 14-digit prime number
• 99,999,999,999,999 : largest 14-digit number, repdigit

See also

• Long and short scales
• Names of large numbers
• Orders of magnitude (numbers)
• Power of 10