81987646027072

Names of 81987646027072

• Cardinal: 81987646027072 can be written as Eighty-one trillion, nine hundred eighty-seven billion, six hundred forty-six million, twenty-seven thousand and seventy-two.

Scientific notation

• Scientific notation: 8.1987646027072 × 10¹³

Factors of 81987646027072

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 193

Divisors of 81987646027072

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 4 8 16 32 37 47 64 74 94 107 148 188 214 296 376 428 592 752 856 1184 1369 1504 1712 1739 2209 2368 2738 3008 3424 3478 3959 4418 5029 5476 6848 6956 7918 8836 10058 10952 11449 13912 15836 17672 20116 21904 22898 27824 31672 35344 40232 43808 45796 50653 55648 63344 64343 70688 80464 81733 87616 91592 101306 111296 126688 128686 141376 146483 160928 163466 183184 186073 202612 236363 253376 257372 292966 321856 326932 366368 372146 405224 423613 472726 514744 538103 585932 653864 732736 744292 810448 847226 945452 1029488 1076206 1171864 1307728 1488584 1620896 1694452 1890904 2058976 2152412 2343728 2380691 2615456 2977168 3024121 3241792 3388904 3781808 4117952 4304824 4687456 4761382 5230912 5419871 5954336 6048242 6777808 6884701 7563616 8609648 8745431 9374912 9522764 10839742 11908672 12096484 13555616 13769402 15127232 15673681 17219296 17490862 19045528 19909811 21679484 24192968 25290841 27111232 27538804 31347362 34438592 34981724 38091056 39819622 43358968 48385936 50581682 55077608 62694724 69963448 76182112 79639244 86717936 96771872 101163364 110155216 111892477 125389448 139926896 152364224 159278488 173435872 193543744 202326728 220310432 223784954 250778896 254733937 279853792 318556976 323580947 346871744 404653456 440620864 447569908 501557792 509467874 559707584 579926197 637113952 647161894 736663007 809306912 895139816 935761117 1003115584 1018935748 1159852394 1274227904 1294323788 1473326014 1618613824 1790279632 1871522234 2037871496 2319704788 2588647576 2946652028 3580559264 3743044468 4075742992 4639409576 5177295152 5893304056 7161118528 7486088936 8151485984 9278819152 10354590304 11786608112 11972495039 14972177872 16302971968 18557638304 20709180608 23573216224 23944990078 27256531259 29944355744 34623161329 37115276608 47146432448 47889980156 54513062518 59888711488 69246322658 95779960312 109026125036 138492645316 191559920624 218052250072 276985290632 383119841248 436104500144 553970581264 766239682496 872209000288 1107941162528 1281056969173 1744418000576 2215882325056 2562113938346 5124227876692 10248455753384 20496911506768 40993823013536 81987646027072
• Sum of all divisors σ(n): 172458481211380
• Sum of proper divisors (its aliquot sum) s(n): 90470835184308
• 81987646027072 is an abundant number, because the sum of its proper divisors (90470835184308) is greater than itself. Its abundance is 8483189157236

Bases of 81987646027072

• Binary: 10010101001000100111100100001000111010101000000₂
• Hexadecimal: 0x4A913C847540
• Base-36: T28LRL3R4

Squares and roots of 81987646027072

• 81987646027072 squared (81987646027072²) is 6721974101060455105756893184
• 81987646027072 cubed (81987646027072³) is 551118833200890100673597361052655476277248
• The square root of 81987646027072 is 9054702.9784014453
• The cube root of 81987646027072 is 43442.6329754811

Scales and comparisons

• 81,987,646,027,072 seconds is equal to 2,606,953 years, 28 weeks, 6 hours, 37 minutes, 52 seconds.
• To count from 1 to 81,987,646,027,072 would take you about six million, five hundred seventeen thousand, three hundred eighty-three 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 81987646027072 cubic inches would be around 3620.2 feet tall.

Recreational maths with 81987646027072

• 81987646027072 backwards is 27072064678918
• The number of decimal digits it has is: 14
• The sum of 81987646027072's digits is 67
• More coming soon!