21521016855
21,521,016,855 is an odd composite number composed of six prime numbers multiplied together.
21521016855 is an odd composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21521016855:
32 × 5 × 132 × 23 × 61 × 2017
(3 × 3 × 5 × 13 × 13 × 23 × 61 × 2017)See below for interesting mathematical facts about the number 21521016855 from the Numbermatics database.
Names of 21521016855
- Cardinal: 21521016855 can be written as Twenty-one billion, five hundred twenty-one million, sixteen thousand, eight hundred fifty-five.
Scientific notation
- Scientific notation: 2.1521016855 × 1010
Factors of 21521016855
Divisors of 21521016855
- Number of divisors d(n): 144
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Complete list of divisors:
1 3 5 9 13 15 23 39 45 61 65 69 115 117 169 183 195 207 299 305 345 507 549 585 793 845 897 915 1035 1403 1495 1521 2017 2379 2535 2691 2745 3887 3965 4209 4485 6051 7015 7137 7605 10085 10309 11661 11895 12627 13455 18153 18239 19435 21045 26221 30255 30927 34983 35685 46391 51545 54717 58305 63135 78663 90765 91195 92781 123037 131105 139173 154635 164151 174915 231955 235989 237107 273585 340873 369111 393315 417519 463905 603083 615185 695865 711321 820755 1022619 1107333 1179945 1185535 1599481 1704365 1809249 1845555 2087595 2133963 2829851 3015415 3067857 3556605 4798443 5113095 5427747 5536665 7840079 7997405 8489553 9046245 10669815 14149255 14395329 15339285 20793253 23520237 23992215 25468659 27138735 36788063 39200395 42447765 62379759 70560711 71976645 103966265 110364189 117601185 127343295 183940315 187139277 311898795 331092567 352803555 478244819 551820945 935696385 1434734457 1655462835 2391224095 4304203371 7173672285 21521016855
- Sum of all divisors σ(n): 42861738816
- Sum of proper divisors (its aliquot sum) s(n): 21340721961
- 21521016855 is a deficient number, because the sum of its proper divisors (21340721961) is less than itself. Its deficiency is 180294894
Bases of 21521016855
- Binary: 101000000101100000010101000000101112
- Hexadecimal: 0x502C0A817
- Base-36: 9VX22VR
Squares and roots of 21521016855
- 21521016855 squared (215210168552) is 463154166473194091025
- 21521016855 cubed (215210168553) is 9967548623133085938635429226375
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The
square root of 21521016855 is 146700.4323613261 -
The
cube root of 21521016855 is 2781.5546423661
Scales and comparisons
How big is 21521016855?- 21,521,016,855 seconds is equal to 684 years, 15 weeks, 4 days, 20 hours, 14 minutes, 15 seconds.
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To count from 1 to 21,521,016,855 would take you about one thousand, three hundred sixty-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 21521016855 cubic inches would be around 231.8 feet tall.
Recreational maths with 21521016855
- 21521016855 backwards is 55861012512
- The number of decimal digits it has is: 11
- The sum of 21521016855's digits is 36
- More coming soon!
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The information we have on file for 21521016855 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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