81655304196720

Names of 81655304196720

• Cardinal: 81655304196720 can be written as Eighty-one trillion, six hundred fifty-five billion, three hundred four million, one hundred ninety-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 8.165530419672 × 10¹³

Factors of 81655304196720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 76806

Divisors of 81655304196720

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 97 120 157 194 240 291 293 314 388 471 485 582 586 628 776 785 879 942 970 1164 1172 1256 1455 1465 1552 1570 1758 1884 1940 2328 2344 2355 2512 2910 2930 3140 3516 3768 3880 4395 4656 4688 4710 5820 5860 6280 7032 7536 7760 8790 9420 11640 11720 12560 14064 15229 17580 18840 23280 23440 28421 30458 35160 37680 45687 46001 56842 60916 70320 76145 76249 85263 91374 92002 113684 121832 138003 142105 152290 152498 170526 182748 184004 227368 228435 228747 230005 243664 276006 284210 304580 304996 341052 365496 368008 381245 426315 454736 456870 457494 460010 552012 568420 609160 609992 682104 690015 730992 736016 762490 852630 913740 914988 920020 1104024 1136840 1143735 1218320 1219984 1364208 1380030 1524980 1705260 1827480 1829976 1840040 2208048 2273680 2287470 2760060 3049960 3410520 3654960 3659952 3680080 4462097 4574940 5520120 6099920 6821040 7396153 8924194 9149880 11040240 11971093 13386291 14792306 17848388 18299760 22188459 22310485 22340957 23942186 26772582 29584612 35696776 35913279 36980765 44376918 44620970 44681914 47884372 53545164 59169224 59855465 66931455 67022871 71393552 71826558 73961530 88753836 89241940 89363828 95768744 107090328 110942295 111704785 118338448 119710930 133862910 134045742 143653116 147923060 177507672 178483880 178727656 179566395 191537488 214180656 221884590 223409570 239421860 267725820 268091484 287306232 295846120 335114355 355015344 356967760 357455312 359132790 443769180 446819140 478843720 535451640 536182968 574612464 591692240 670228710 718265580 887538360 893638280 957687440 1070903280 1072365936 1161196021 1340457420 1436531160 1775076720 1787276560 2167072829 2322392042 2680914840 2873062320 3483588063 3507530249 4334145658 4644784084 5361829680 5805980105 6501218487 6967176126 7015060498 8668291316 9289568168 10522590747 10835364145 11611960210 13002436974 13934352252 14030120996 17336582632 17417940315 17537651245 18579136336 21045181494 21670728290 23223920420 26004873948 27868704504 28060241992 32506092435 34673165264 34835880630 35075302490 42090362988 43341456580 46447840840 52009747896 52612953735 55737409008 56120483984 65012184870 69671761260 70150604980 84180725976 86682913160 92895681680 104019495792 105225907470 130024369740 139343522520 140301209960 168361451952 173365826320 210451814940 260048739480 278687045040 280602419920 340230434153 420903629880 520097478960 680460868306 841807259760 1020691302459 1360921736612 1701152170765 2041382604918 2721843473224 3402304341530 4082765209836 5103456512295 5443686946448 6804608683060 8165530419672 10206913024590 13609217366120 16331060839344 20413826049180 27218434732240 40827652098360 81655304196720
• Sum of all divisors σ(n): 258251752080000
• Sum of proper divisors (its aliquot sum) s(n): 176596447883280
• 81655304196720 is an abundant number, because the sum of its proper divisors (176596447883280) is greater than itself. Its abundance is 94941143686560

Bases of 81655304196720

• Binary: 10010100100001111011011011001101001001001110000₂
• Hexadecimal: 0x4A43DB669270
• Base-36: SXZXFUA9C

Squares and roots of 81655304196720

• 81655304196720 squared (81655304196720²) is 6667588703458878844458758400
• 81655304196720 cubed (81655304196720³) is 544443983839548653287879278896480552448000
• The square root of 81655304196720 is 9036332.4527553767
• The cube root of 81655304196720 is 43383.8543786325

Scales and comparisons

• 81,655,304,196,720 seconds is equal to 2,596,386 years, 5 weeks, 7 hours, 32 minutes.
• To count from 1 to 81,655,304,196,720 would take you about six million, four hundred ninety thousand, nine hundred sixty-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 81655304196720 cubic inches would be around 3615.3 feet tall.

Recreational maths with 81655304196720

• 81655304196720 backwards is 02769140355618
• The number of decimal digits it has is: 14
• The sum of 81655304196720's digits is 57
• More coming soon!