81679927842

Names of 81679927842

• Cardinal: 81679927842 can be written as Eighty-one billion, six hundred seventy-nine million, nine hundred twenty-seven thousand, eight hundred forty-two.

Scientific notation

• Scientific notation: 8.1679927842 × 10¹⁰

Factors of 81679927842

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 130

Divisors of 81679927842

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 3 6 9 18 31 41 53 62 82 93 106 123 159 186 246 279 318 369 477 558 738 954 961 1271 1643 1681 1922 2173 2542 2809 2883 3286 3362 3813 4346 4929 5043 5618 5766 6519 7626 8427 8649 9858 10086 11439 13038 14787 15129 16854 17298 19557 22878 25281 29574 30258 39114 39401 50562 50933 52111 67363 78802 87079 89093 101866 104222 115169 118203 134726 152799 156333 174158 178186 202089 230338 236406 261237 267279 305598 312666 345507 354609 404178 458397 468999 522474 534558 606267 691014 709218 783711 801837 916794 937998 1036521 1212534 1567422 1603674 1615441 2073042 2088253 2699449 2761883 3230882 3570239 4176506 4721929 4846323 5398898 5523766 6264759 7140478 8098347 8285649 9443858 9692646 10710717 12529518 14165787 14538969 16196694 16571298 18794277 21421434 24295041 24856947 28331574 29077938 32132151 37588554 42497361 48590082 49713894 64264302 84994722 85618373 110677409 146379799 171236746 221354818 256855119 292759598 332032227 439139397 513710238 664064454 770565357 878278794 996096681 1317418191 1541130714 1992193362 2634836382 4537773769 9075547538 13613321307 27226642614 40839963921 81679927842
• Sum of all divisors σ(n): 191038315923
• Sum of proper divisors (its aliquot sum) s(n): 109358388081
• 81679927842 is an abundant number, because the sum of its proper divisors (109358388081) is greater than itself. Its abundance is 27678460239

Bases of 81679927842

• Binary: 1001100000100100000001100101000100010₂
• Hexadecimal: 0x130480CA22
• Base-36: 11IU4BOI

Squares and roots of 81679927842

• 81679927842 squared (81679927842²) is 6671610612274326776964
• 81679927842 cubed (81679927842³) is 544936673400488450651547947831688
• The square root of 81679927842 is 285797.0046064165
• The cube root of 81679927842 is 4338.8214827263

Scales and comparisons

• 81,679,927,842 seconds is equal to 2,597 years, 8 weeks, 5 days, 12 hours, 50 minutes, 42 seconds.
• To count from 1 to 81,679,927,842 would take you about five thousand, one hundred ninety-four 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 81679927842 cubic inches would be around 361.6 feet tall.

Recreational maths with 81679927842

• 81679927842 backwards is 24872997618
• The number of decimal digits it has is: 11
• The sum of 81679927842's digits is 63
• More coming soon!