81318014092689408

Names of 81318014092689408

• Cardinal: 81318014092689408 can be written as Eighty-one quadrillion, three hundred eighteen trillion, fourteen billion, ninety-two million, six hundred eighty-nine thousand, four hundred eight.

Scientific notation

• Scientific notation: 8.1318014092689408 × 10¹⁶

Factors of 81318014092689408

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 228

Divisors of 81318014092689408

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 223 256 288 384 446 512 576 669 768 892 1024 1152 1338 1536 1784 2007 2048 2304 2676 3072 3568 4014 4096 4608 5352 6144 7136 8028 8192 9216 10704 12288 14272 16056 16384 18432 21408 24576 28544 32112 36864 42816 49152 49729 57088 64224 73728 85632 99458 114176 128448 147456 149187 171264 198916 228352 256896 298374 342528 397832 447561 456704 513792 596748 685056 795664 895122 913408 1027584 1193496 1370112 1591328 1790244 1826816 2055168 2386992 2740224 3182656 3580488 3653632 4110336 4773984 5480448 6365312 7160976 8220672 9547968 10960896 11089567 12730624 14321952 16441344 19095936 22179134 25461248 28643904 32882688 33268701 38191872 44358268 50922496 57287808 66537402 76383744 88716536 99806103 101844992 114575616 133074804 152767488 177433072 199612206 203689984 229151232 266149608 305534976 354866144 399224412 407379968 458302464 532299216 611069952 709732288 798448824 814759936 916604928 1064598432 1222139904 1419464576 1596897648 1833209856 2129196864 2444279808 2472973441 2838929152 3193795296 3666419712 4258393728 4945946882 5677858304 6387590592 7332839424 7418920323 8516787456 9891893764 11355716608 12775181184 14837840646 17033574912 19783787528 22256760969 22711433216 25550362368 29675681292 34067149824 39567575056 44513521938 45422866432 51100724736 59351362584 68134299648 79135150112 89027043876 90845732864 102201449472 118702725168 136268599296 158270300224 178054087752 181691465728 204402898944 237405450336 272537198592 316540600448 356108175504 408805797888 474810900672 545074397184 551473077343 633081200896 712216351008 817611595776 949621801344 1102946154686 1266162401792 1424432702016 1635223191552 1654419232029 1899243602688 2205892309372 2532324803584 2848865404032 3308838464058 3798487205376 4411784618744 4963257696087 5064649607168 5697730808064 6617676928116 7596974410752 8823569237488 9926515392174 10129299214336 11395461616128 13235353856232 15193948821504 17647138474976 19853030784348 20258598428672 22790923232256 26470707712464 30387897643008 35294276949952 39706061568696 40517196857344 45581846464512 52941415424928 60775795286016 70588553899904 79412123137392 91163692929024 105882830849856 121551590572032 141177107799808 158824246274784 182327385858048 211765661699712 282354215599616 317648492549568 364654771716096 423531323399424 564708431199232 635296985099136 847062646798848 1129416862398464 1270593970198272 1694125293597696 2258833724796928 2541187940396544 3388250587195392 4517667449593856 5082375880793088 6776501174390784 9035334899187712 10164751761586176 13553002348781568 20329503523172352 27106004697563136 40659007046344704 81318014092689408
• Sum of all divisors σ(n): 235969698310985184
• Sum of proper divisors (its aliquot sum) s(n): 154651684218295776
• 81318014092689408 is an abundant number, because the sum of its proper divisors (154651684218295776) is greater than itself. Its abundance is 73333670125606368

Bases of 81318014092689408

• Binary: 100100000111001100100110110001111110101011100000000000000₂
• Hexadecimal: 0x120E64D8FD5C000
• Base-36: M8OTVYDVR40

Squares and roots of 81318014092689408

• 81318014092689408 squared (81318014092689408²) is 6612619415978833163382750355390464
• 81318014092689408 cubed (81318014092689408³) is 537725078858158357880006567202861134871427717005312
• The square root of 81318014092689408 is 285163135.9286985537
• The cube root of 81318014092689408 is 433240.3732547653

Scales and comparisons

• 81,318,014,092,689,408 seconds is equal to 2,585,661,315 years, 5 days, 9 hours, 16 minutes, 48 seconds.
• To count from 1 to 81,318,014,092,689,408 would take you about seven billion, seven hundred fifty-six million, nine hundred eighty-three thousand, nine hundred forty-five 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 81318014092689408 cubic inches would be around 36103.4 feet tall.

Recreational maths with 81318014092689408

• 81318014092689408 backwards is 80498629041081318
• 81318014092689408 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81318014092689408's digits is 72
• More coming soon!