81838479893742

Names of 81838479893742

• Cardinal: 81838479893742 can be written as Eighty-one trillion, eight hundred thirty-eight billion, four hundred seventy-nine million, eight hundred ninety-three thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 8.1838479893742 × 10¹³

Factors of 81838479893742

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 222337660

Divisors of 81838479893742

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 6 9 11 13 18 22 26 33 39 66 78 99 117 121 143 169 198 234 242 286 338 363 429 507 726 858 1014 1089 1287 1521 1573 1859 2178 2574 3042 3146 3718 4719 5577 9438 11154 14157 16731 20449 28314 33462 40898 61347 122694 184041 368082 222337631 444675262 667012893 1334025786 2001038679 2445713941 2890389203 4002077358 4891427882 5780778406 7337141823 8671167609 14674283646 17342335218 22011425469 26013502827 26902853351 31794281233 37575059639 44022850938 52027005654 53805706702 63588562466 75150119278 80708560053 95382843699 112725178917 161417120106 190765687398 225450357834 242125680159 286148531097 338175536751 349737093563 413325656029 484251360318 572297062194 676351073502 699474187126 826651312058 1049211280689 1239976968087 2098422561378 2479953936174 3147633842067 3719930904261 4546582216319 6295267684134 7439861808522 9093164432638 13639746648957 27279493297914 40919239946871 81838479893742
• Sum of all divisors σ(n): 211047549384672
• Sum of proper divisors (its aliquot sum) s(n): 129209069490930
• 81838479893742 is an abundant number, because the sum of its proper divisors (129209069490930) is greater than itself. Its abundance is 47370589597188

Bases of 81838479893742

• Binary: 10010100110111010000001100001011110010011101110₂
• Hexadecimal: 0x4A6E8185E4EE
• Base-36: T0C2TX6NI

Squares and roots of 81838479893742

• 81838479893742 squared (81838479893742²) is 6697536791318413595610762564
• 81838479893742 cubed (81838479893742³) is 548116230033909300304207488036254311474488
• The square root of 81838479893742 is 9046462.2860951563
• The cube root of 81838479893742 is 43416.2708594671

Scales and comparisons

• 81,838,479,893,742 seconds is equal to 2,602,210 years, 26 weeks, 6 days, 9 hours, 35 minutes, 42 seconds.
• To count from 1 to 81,838,479,893,742 would take you about six million, five hundred five thousand, five hundred twenty-six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81838479893742 cubic inches would be around 3618 feet tall.

Recreational maths with 81838479893742

• 81838479893742 backwards is 24739897483818
• The number of decimal digits it has is: 14
• The sum of 81838479893742's digits is 81
• More coming soon!