81121012055520

Names of 81121012055520

• Cardinal: 81121012055520 can be written as Eighty-one trillion, one hundred twenty-one billion, twelve million, fifty-five thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.112101205552 × 10¹³

Factors of 81121012055520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 7397

Divisors of 81121012055520

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 68 80 85 96 102 120 136 160 170 193 204 240 255 272 340 386 408 480 510 544 579 680 772 816 965 1020 1158 1360 1544 1632 1930 2040 2316 2720 2895 3088 3281 3860 4080 4632 5790 6176 6562 7177 7720 8160 9264 9843 11580 13124 14354 15440 16405 18528 19686 21531 23160 26248 28708 30880 32810 35885 39372 43062 46320 49215 52496 57416 65620 71770 78744 86124 92640 98430 104992 107655 114832 122009 131240 143540 157488 172248 196860 215310 229664 244018 262480 287080 314976 344496 366027 393720 430620 488036 524960 574160 610045 688992 732054 787440 861240 976072 1148320 1220090 1385161 1464108 1574880 1722480 1830135 1952144 2440180 2770322 2928216 3444960 3660270 3904288 4155483 4880360 5540644 5856432 6925805 7320540 8310966 9760720 11081288 11712864 13851610 14641080 16621932 19521440 20777415 22162576 23547737 27703220 29282160 33243864 41554830 44325152 47095474 51509329 55406440 58564320 66487728 70643211 83109660 94190948 103018658 110812880 117738685 132975456 141286422 154527987 166219320 188381896 206037316 221625760 235477370 257546645 282572844 309055974 332438640 353216055 376763792 412074632 470954740 515093290 565145688 618111948 664877280 706432110 753527584 772639935 824149264 875658593 941909480 1030186580 1130291376 1236223896 1412864220 1545279870 1648298528 1751317186 1883818960 2060373160 2260582752 2472447792 2626975779 2825728440 3090559740 3502634372 3767637920 4120746320 4378292965 4944895584 5253951558 5651456880 6181119480 7005268744 8241492640 8756585930 9941300497 10507903116 11302913760 12362238960 13134878895 14010537488 17513171860 19882600994 21015806232 24724477920 26269757790 28021074976 29823901491 35026343720 39765201988 42031612464 49706502485 52539515580 59647802982 70052687440 79530403976 84063224928 99413004970 105079031160 119295605964 140105374880 149119507455 159060807952 169002108449 198826009940 210158062320 238591211928 298239014910 318121615904 338004216898 397652019880 420316124640 477182423856 507006325347 596478029820 676008433796 795304039760 845010542245 954364847712 1014012650694 1192956059640 1352016867592 1590608079520 1690021084490 2028025301388 2385912119280 2535031626735 2704033735184 3380042168980 4056050602776 4771824238560 5070063253470 5408067470368 6760084337960 8112101205552 10140126506940 13520168675920 16224202411104 20280253013880 27040337351840 40560506027760 81121012055520
• Sum of all divisors σ(n): 272002211375328
• Sum of proper divisors (its aliquot sum) s(n): 190881199319808
• 81121012055520 is an abundant number, because the sum of its proper divisors (190881199319808) is greater than itself. Its abundance is 109760187264288

Bases of 81121012055520

• Binary: 10010011100011101110101000110110111110111100000₂
• Hexadecimal: 0x49C7751B7DE0
• Base-36: SR6H83FMO

Squares and roots of 81121012055520

• 81121012055520 squared (81121012055520²) is 6580618596911821175562470400
• 81121012055520 cubed (81121012055520³) is 533826440532862953025201579735273156608000
• The square root of 81121012055520 is 9006720.3828874359
• The cube root of 81121012055520 is 43289.0232503091

Scales and comparisons

• 81,121,012,055,520 seconds is equal to 2,579,397 years, 13 weeks, 3 days, 11 hours, 52 minutes.
• To count from 1 to 81,121,012,055,520 would take you about six million, four hundred forty-eight thousand, four hundred ninety-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 81121012055520 cubic inches would be around 3607.4 feet tall.

Recreational maths with 81121012055520

• 81121012055520 backwards is 02555021012118
• The number of decimal digits it has is: 14
• The sum of 81121012055520's digits is 33
• More coming soon!