81629676943920

Names of 81629676943920

• Cardinal: 81629676943920 can be written as Eighty-one trillion, six hundred twenty-nine billion, six hundred seventy-six million, nine hundred forty-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 8.162967694392 × 10¹³

Factors of 81629676943920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 479063

Divisors of 81629676943920

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 42 45 48 56 60 63 70 72 80 84 90 105 112 120 126 140 144 168 180 210 240 252 280 315 336 360 420 504 560 630 720 840 1008 1260 1680 2520 5040 36607 73214 109821 146428 183035 219642 256249 292856 329463 366070 439284 442439 512498 549105 585712 658926 732140 768747 878568 884878 1024996 1098210 1281245 1317852 1327317 1464280 1537494 1647315 1757136 1769756 2049992 2196420 2212195 2306241 2562490 2635704 2654634 2928560 3074988 3097073 3294630 3539512 3843735 3981951 4099984 4392840 4424390 4612482 5124980 5271408 5309268 6149976 6194146 6589260 6636585 7079024 7687470 7963902 8785680 8848780 9224964 9291219 10249960 10618536 11531205 12299952 12388292 13178520 13273170 15374940 15485365 15927804 17697560 18449928 18582438 19909755 20499920 21237072 23062410 24776584 26357040 26546340 27873657 30749880 30970730 31855608 35395120 36899856 37164876 39819510 46124820 46456095 49553168 53092680 55747314 61499760 61941460 63711216 74329752 79639020 92249640 92912190 106185360 111494628 123882920 139368285 148659504 159278040 184499280 185824380 222989256 247765840 278736570 318556080 371648760 445978512 557473140 743297520 1114946280 2229892560 16196364473 32392728946 48589093419 64785457892 80981822365 97178186838 113374551311 129570915784 145767280257 161963644730 194356373676 226749102622 242945467095 259141831568 291534560514 323927289460 340123653933 388712747352 453498205244 485890934190 566872756555 583069121028 647854578920 680247307866 728836401285 777425494704 906996410488 971781868380 1020370961799 1133745513110 1166138242056 1295709157840 1360494615732 1457672802570 1700618269665 1813992820976 1943563736760 2040741923598 2267491026220 2332276484112 2720989231464 2915345605140 3401236539330 3887127473520 4081483847196 4534982052440 5101854808995 5441978462928 5830691210280 6802473078660 8162967694392 9069964104880 10203709617990 11661382420560 13604946157320 16325935388784 20407419235980 27209892314640 40814838471960 81629676943920
• Sum of all divisors σ(n): 313311741050880
• Sum of proper divisors (its aliquot sum) s(n): 231682064106960
• 81629676943920 is an abundant number, because the sum of its proper divisors (231682064106960) is greater than itself. Its abundance is 150052387163040

Bases of 81629676943920

• Binary: 10010100011110111100011111001011011101000110000₂
• Hexadecimal: 0x4A3DE3E5BA30
• Base-36: SXO5M1BG0

Squares and roots of 81629676943920

• 81629676943920 squared (81629676943920²) is 6663404157968744430824966400
• 81629676943920 cubed (81629676943920³) is 543931528761761878804903663087188684288000
• The square root of 81629676943920 is 9034914.3296392135
• The cube root of 81629676943920 is 43379.3152763359

Scales and comparisons

• 81,629,676,943,920 seconds is equal to 2,595,571 years, 11 weeks, 6 days, 14 hours, 12 minutes.
• To count from 1 to 81,629,676,943,920 would take you about six million, four hundred eighty-eight thousand, nine hundred twenty-eight 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 81629676943920 cubic inches would be around 3614.9 feet tall.

Recreational maths with 81629676943920

• 81629676943920 backwards is 02934967692618
• 81629676943920 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81629676943920's digits is 72
• More coming soon!