81998039364

Names of 81998039364

• Cardinal: 81998039364 can be written as Eighty-one billion, nine hundred ninety-eight million, thirty-nine thousand, three hundred sixty-four.

Scientific notation

• Scientific notation: 8.1998039364 × 10¹⁰

Factors of 81998039364

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1405

Divisors of 81998039364

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 12 31 43 62 86 93 97 124 129 172 186 194 258 291 372 388 516 582 1164 1229 1333 1849 2458 2666 3007 3687 3698 3999 4171 4916 5332 5547 6014 7374 7396 7998 8342 9021 11094 12028 12513 14748 15996 16684 18042 22188 25026 36084 38099 50052 52847 57319 76198 105694 114297 114638 119213 129301 152396 158541 171957 179353 211388 228594 229276 238426 258602 317082 343914 357639 358706 387903 457188 476852 517204 538059 634164 687828 715278 717412 775806 1076118 1430556 1551612 1638257 2152236 2272421 3276514 3695603 4544842 4914771 5126159 5559943 6553028 6817263 7391206 9089684 9829542 10252318 11086809 11119886 13634526 14782412 15378477 16679829 19659084 20504636 22173618 22239772 27269052 30756954 33359658 44347236 61513908 66719316 70445051 140890102 158910929 211335153 220424837 281780204 317821858 422670306 440849674 476732787 635643716 661274511 845340612 881699348 953465574 1322549022 1906931148 2645098044 6833169947 13666339894 20499509841 27332679788 40999019682 81998039364
• Sum of all divisors σ(n): 204451269120
• Sum of proper divisors (its aliquot sum) s(n): 122453229756
• 81998039364 is an abundant number, because the sum of its proper divisors (122453229756) is greater than itself. Its abundance is 40455190392

Bases of 81998039364

• Binary: 1001100010111011101101100100101000100₂
• Hexadecimal: 0x131776C944
• Base-36: 11O3IK3O

Squares and roots of 81998039364

• 81998039364 squared (81998039364²) is 6723678459540093524496
• 81998039364 cubed (81998039364³) is 551328450996247470157864506260544
• The square root of 81998039364 is 286352.9978261097
• The cube root of 81998039364 is 4344.4468596927

Scales and comparisons

• 81,998,039,364 seconds is equal to 2,607 years, 14 weeks, 5 days, 9 hours, 9 minutes, 24 seconds.
• To count from 1 to 81,998,039,364 would take you about five thousand, two hundred fourteen 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 81998039364 cubic inches would be around 362 feet tall.

Recreational maths with 81998039364

• 81998039364 backwards is 46393089918
• The number of decimal digits it has is: 11
• The sum of 81998039364's digits is 60
• More coming soon!