81397020604800

Names of 81397020604800

• Cardinal: 81397020604800 can be written as Eighty-one trillion, three hundred ninety-seven billion, twenty million, six hundred four thousand, eight hundred.

Scientific notation

• Scientific notation: 8.13970206048 × 10¹³

Factors of 81397020604800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 27785

Divisors of 81397020604800

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 53 60 64 75 80 96 100 106 120 128 150 159 160 192 200 212 240 265 300 318 320 384 400 424 480 530 600 636 640 795 800 848 960 1060 1200 1272 1325 1590 1600 1696 1920 2120 2400 2544 2650 3180 3200 3392 3975 4240 4800 5088 5300 6360 6784 7950 8191 8480 9600 10176 10600 12720 15900 16382 16960 19531 20352 21200 24573 25440 31800 32764 33920 39062 40955 42400 49146 50880 58593 63600 65528 78124 81910 84800 97655 98292 101760 117186 122865 127200 131056 156248 163820 169600 195310 196584 204775 234372 245730 254400 262112 292965 312496 327640 390620 393168 409550 434123 468744 488275 491460 508800 524224 585930 614325 624992 655280 781240 786336 819100 868246 937488 976550 982920 1035143 1048448 1171860 1228650 1249984 1302369 1310560 1464825 1562480 1572672 1638200 1736492 1874976 1953100 1965840 2070286 2170615 2343720 2457300 2499968 2604738 2621120 2929650 3105429 3124960 3145344 3276400 3472984 3749952 3906200 3931680 4140572 4341230 4687440 4914600 5175715 5209476 5242240 5859300 6210858 6249920 6511845 6552800 6945968 7499904 7812400 7863360 8281144 8682460 9374880 9829200 10351430 10418952 10853075 11718600 12421716 12499840 13023690 13105600 13891936 15527145 15624800 15726720 16562288 17364920 18749760 19658400 20702860 20837904 21706150 23437200 24843432 25878575 26047380 26211200 27783872 31054290 31249600 32559225 33124576 34729840 37499520 39316800 41405720 41675808 43412300 46874400 49686864 51757150 52094760 55567744 62108580 62499200 65118450 66249152 69459680 77635725 78633600 82811440 83351616 86824600 93748800 99373728 103514300 104189520 124217160 130236900 132498304 138919360 155271450 159978421 165622880 166703232 173649200 187497600 198747456 207028600 208379040 248434320 260473800 277838720 310542900 319956842 331245760 347298400 397494912 414057200 416758080 479935263 496868640 520947600 621085800 639913684 662491520 694596800 799892105 828114400 833516160 959870526 993737280 1041895200 1242171600 1279827368 1389193600 1599784210 1656228800 1919741052 1987474560 2083790400 2399676315 2484343200 2559654736 3199568420 3312457600 3839482104 3999460525 4167580800 4799352630 4968686400 5119309472 6399136840 7678964208 7998921050 8478856313 9598705260 9937372800 10238618944 11998381575 12798273680 15357928416 15997842100 16957712626 19197410520 20477237888 23996763150 25436568939 25596547360 30715856832 31995684200 33915425252 38394821040 42394281565 47993526300 50873137878 51193094720 61431713664 63991368400 67830850504 76789642080 84788563130 95987052600 101746275756 102386189440 127182844695 127982736800 135661701008 153579284160 169577126260 191974105200 203492551512 211971407825 254365689390 255965473600 271323402016 307158568320 339154252520 383948210400 406985103024 423942815650 508731378780 511930947200 542646804032 635914223475 678308505040 767896420800 813970206048 847885631300 1017462757560 1085293608064 1271828446950 1356617010080 1535792841600 1627940412096 1695771262600 2034925515120 2543656893900 2713234020160 3255880824192 3391542525200 4069851030240 5087313787800 5426468040320 6783085050400 8139702060480 10174627575600 13566170100800 16279404120960 20349255151200 27132340201600 40698510302400 81397020604800
• Sum of all divisors σ(n): 273207290757120
• Sum of proper divisors (its aliquot sum) s(n): 191810270152320
• 81397020604800 is an abundant number, because the sum of its proper divisors (191810270152320) is greater than itself. Its abundance is 110413249547520

Bases of 81397020604800

• Binary: 10010100000011110111000011111111011100110000000₂
• Hexadecimal: 0x4A07B87FB980
• Base-36: SUP9WGJ9C

Squares and roots of 81397020604800

• 81397020604800 squared (81397020604800²) is 6625474963338235757783040000
• 81397020604800 cubed (81397020604800³) is 539293922107428900567946248847982592000000
• The square root of 81397020604800 is 9022029.7386342061
• The cube root of 81397020604800 is 43338.0636277981

Scales and comparisons

• 81,397,020,604,800 seconds is equal to 2,588,173 years, 24 weeks, 5 days, 21 hours, 20 minutes.
• To count from 1 to 81,397,020,604,800 would take you about six million, four hundred seventy thousand, four hundred thirty-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 81397020604800 cubic inches would be around 3611.5 feet tall.

Recreational maths with 81397020604800

• 81397020604800 backwards is 00840602079318
• 81397020604800 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81397020604800's digits is 48
• More coming soon!