21378883109451920

Names of 21378883109451920

• Cardinal: 21378883109451920 can be written as Twenty-one quadrillion, three hundred seventy-eight trillion, eight hundred eighty-three billion, one hundred nine million, four hundred fifty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.137888310945192 × 10¹⁶

Factors of 21378883109451920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 16148168507

Divisors of 21378883109451920

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 13 16 19 20 26 38 40 52 65 67 76 80 95 104 130 134 152 190 208 247 260 268 304 335 380 494 520 536 670 760 871 988 1040 1072 1235 1273 1340 1520 1742 1976 2470 2546 2680 3484 3952 4355 4940 5092 5360 6365 6968 8710 9880 10184 12730 13936 16549 17420 19760 20368 25460 33098 34840 50920 66196 69680 82745 101840 132392 165490 264784 330980 661960 1323920 16148168401 32296336802 64592673604 80740842005 129185347208 161481684010 209926189213 258370694416 306815199619 322963368020 419852378426 613630399238 645926736040 839704756852 1049630946065 1081927282867 1227260798476 1291853472080 1534075998095 1679409513704 2099261892130 2163854565734 2454521596952 3068151996190 3358819027408 3988597595047 4198523784260 4327709131468 4909043193904 5409636414335 6136303992380 7977195190094 8397047568520 8655418262936 10819272828670 12272607984760 14065054677271 15954390380188 16794095137040 17310836525872 19942987975235 20556618374473 21638545657340 24545215969520 28130109354542 31908780760376 39885975950470 41113236748946 43277091314680 56260218709084 63817561520752 70325273386355 79771951900940 82226473497892 86554182629360 102783091872365 112520437418168 140650546772710 159543903801880 164452946995784 205566183744730 225040874836336 267236038868149 281301093545420 319087807603760 328905893991568 411132367489460 534472077736298 562602187090840 822264734978920 1068944155472596 1125204374181680 1336180194340745 1644529469957840 2137888310945192 2672360388681490 4275776621890384 5344720777362980 10689441554725960 21378883109451920
• Sum of all divisors σ(n): 57187769505578880
• Sum of proper divisors (its aliquot sum) s(n): 35808886396126960
• 21378883109451920 is an abundant number, because the sum of its proper divisors (35808886396126960) is greater than itself. Its abundance is 14430003286675040

Bases of 21378883109451920

• Binary: 1001011111100111111101100011101011011101111100010010000₂
• Hexadecimal: 0x4BF3FB1D6EF890
• Base-36: 5UI6JBCYOI8

Squares and roots of 21378883109451920

• 21378883109451920 squared (21378883109451920²) is 457056643007608595590442791686400
• 21378883109451920 cubed (21378883109451920³) is 9771360545258159400859727757534415491436517888000
• The square root of 21378883109451920 is 146215194.5231818921
• The cube root of 21378883109451920 is 277541.7597385603

Scales and comparisons

• 21,378,883,109,451,920 seconds is equal to 679,782,353 years, 33 weeks, 6 days, 18 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,378,883,109,451,920 would take you about two billion, thirty-nine million, three hundred forty-seven thousand and sixty 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 21378883109451920 cubic inches would be around 23128.5 feet tall.

Recreational maths with 21378883109451920

• 21378883109451920 backwards is 02915490138887312
• The number of decimal digits it has is: 17
• The sum of 21378883109451920's digits is 71
• More coming soon!