81683216384

Names of 81683216384

• Cardinal: 81683216384 can be written as Eighty-one billion, six hundred eighty-three million, two hundred sixteen thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 8.1683216384 × 10¹⁰

Factors of 81683216384

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 51

Divisors of 81683216384

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 31 32 44 49 56 62 64 77 88 98 112 121 124 128 154 176 196 217 224 242 248 256 308 341 343 352 392 434 448 484 496 512 539 616 682 686 704 784 847 868 896 961 968 992 1024 1078 1232 1364 1372 1408 1519 1568 1694 1736 1792 1922 1936 1984 2048 2156 2387 2464 2728 2744 2816 3038 3136 3388 3472 3584 3751 3773 3844 3872 3968 4312 4774 4928 5456 5488 5632 5929 6076 6272 6727 6776 6944 7168 7502 7546 7688 7744 7936 8624 9548 9856 10571 10633 10912 10976 11264 11858 12152 12544 13454 13552 13888 14336 15004 15092 15376 15488 15872 16709 17248 19096 19712 21142 21266 21824 21952 22528 23716 24304 25088 26257 26908 27104 27776 30008 30184 30752 30976 31744 33418 34496 38192 39424 41503 42284 42532 43648 43904 47089 47432 48608 50176 52514 53816 54208 55552 60016 60368 61504 61952 63488 66836 68992 73997 76384 78848 83006 84568 85064 87296 87808 94178 94864 97216 100352 105028 107632 108416 111104 116281 116963 120032 120736 123008 123904 133672 137984 147994 152768 157696 166012 169136 170128 174592 175616 183799 188356 189728 194432 210056 215264 216832 222208 232562 233926 240064 241472 246016 247808 267344 275968 295988 305536 329623 332024 338272 340256 349184 351232 367598 376712 379456 388864 420112 430528 433664 444416 465124 467852 480128 482944 492032 517979 534688 551936 591976 611072 659246 664048 676544 680512 698368 702464 735196 753424 758912 777728 813967 840224 861056 867328 930248 935704 960256 965888 984064 1035958 1069376 1103872 1183952 1222144 1286593 1318492 1328096 1353088 1361024 1470392 1506848 1517824 1555456 1627934 1680448 1722112 1734656 1860496 1871408 1920512 1931776 1968128 2071916 2138752 2367904 2444288 2573186 2636984 2656192 2706176 2722048 2940784 3013696 3035648 3110912 3255868 3360896 3444224 3625853 3720992 3742816 3841024 3863552 4143832 4277504 4735808 4888576 5146372 5273968 5312384 5412352 5444096 5697769 5881568 6027392 6071296 6511736 6721792 6888448 7251706 7441984 7485632 7682048 7727104 8287664 8555008 9471616 10292744 10547936 10624768 10824704 10888192 11395538 11763136 12054784 12142592 13023472 13443584 13776896 14503412 14883968 14971264 16575328 17110016 18943232 20585488 21095872 21249536 21649408 21776384 22791076 23526272 24109568 26046944 26887168 29006824 29767936 29942528 33150656 34220032 37886464 39884383 41170976 42191744 42499072 45582152 47052544 48219136 52093888 53774336 58013648 59535872 59885056 66301312 75772928 79768766 82341952 84383488 84998144 91164304 94105088 96438272 104187776 116027296 119071744 119770112 132602624 151545856 159537532 164683904 168766976 182328608 188210176 208375552 232054592 238143488 239540224 265205248 319075064 329367808 337533952 364657216 376420352 416751104 464109184 530410496 638150128 658735616 675067904 729314432 833502208 928218368 1060820992 1276300256 1317471232 1458628864 1667004416 1856436736 2552600512 2634942464 2917257728 3712873472 5105201024 5834515456 7425746944 10210402048 11669030912 20420804096 40841608192 81683216384
• Sum of all divisors σ(n): 216329022000
• Sum of proper divisors (its aliquot sum) s(n): 134645805616
• 81683216384 is an abundant number, because the sum of its proper divisors (134645805616) is greater than itself. Its abundance is 52962589232

Bases of 81683216384

• Binary: 1001100000100101100101111100000000000₂
• Hexadecimal: 0x1304B2F800
• Base-36: 11IW2T4W

Squares and roots of 81683216384

• 81683216384 squared (81683216384²) is 6672147838835366035456
• 81683216384 cubed (81683216384³) is 545002495665627162425996664111104
• The square root of 81683216384 is 285802.7578313407
• The cube root of 81683216384 is 4338.8797108433

Scales and comparisons

• 81,683,216,384 seconds is equal to 2,597 years, 14 weeks, 1 day, 14 hours, 19 minutes, 44 seconds.
• To count from 1 to 81,683,216,384 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 81683216384 cubic inches would be around 361.6 feet tall.

Recreational maths with 81683216384

• 81683216384 backwards is 48361238618
• The number of decimal digits it has is: 11
• The sum of 81683216384's digits is 50
• More coming soon!