21513215436440

Names of 21513215436440

• Cardinal: 21513215436440 can be written as Twenty-one trillion, five hundred thirteen billion, two hundred fifteen million, four hundred thirty-six thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.151321543644 × 10¹³

Factors of 21513215436440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2722545

Divisors of 21513215436440

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 20 26 28 35 40 52 56 65 70 91 104 130 140 167 169 182 260 280 334 338 364 455 520 668 676 728 835 845 910 1169 1183 1336 1352 1670 1690 1820 2171 2338 2366 3340 3380 3640 4342 4676 4732 5845 5915 6680 6760 8684 9352 9464 10855 11690 11830 15197 17368 21710 23380 23660 28223 30394 43420 46760 47320 56446 60788 75985 86840 112892 121576 141115 151970 197561 225784 282230 303940 395122 564460 607880 790244 987805 1128920 1580488 1975610 2722351 3951220 5444702 7902440 10889404 13611755 19056457 21778808 27223510 35390563 38112914 54447020 70781126 76225828 95282285 108894040 141562252 152451656 176952815 190564570 247733941 283124504 353905630 381129140 454632617 460077319 495467882 707811260 762258280 909265234 920154638 990935764 1238669705 1415622520 1818530468 1840309276 1981871528 2273163085 2300386595 2477339410 3182428319 3220541233 3637060936 3680618552 4546326170 4600773190 4954678820 5910224021 6364856638 6441082466 9092652340 9201546380 9909357640 11820448042 12729713276 12882164932 15912141595 16102706165 18185304680 18403092760 23640896084 25459426552 25764329864 29551120105 31824283190 32205412330 41371568147 47281792168 59102240210 63648566380 64410824660 76832912273 82743136294 118204480420 127297132760 128821649320 153665824546 165486272588 206857840735 236408960840 307331649092 330972545176 384164561365 413715681470 537830385911 614663298184 768329122730 827431362940 1075660771822 1536658245460 1654862725880 2151321543644 2689151929555 3073316490920 4302643087288 5378303859110 10756607718220 21513215436440
• Sum of all divisors σ(n): 60261112719360
• Sum of proper divisors (its aliquot sum) s(n): 38747897282920
• 21513215436440 is an abundant number, because the sum of its proper divisors (38747897282920) is greater than itself. Its abundance is 17234681846480

Bases of 21513215436440

• Binary: 100111001000011101111100100000110011010011000₂
• Hexadecimal: 0x1390EF906698
• Base-36: 7MJ190KUW

Squares and roots of 21513215436440

• 21513215436440 squared (21513215436440²) is 462818438414680299679873600
• 21513215436440 cubed (21513215436440³) is 9956712773571755704980621921908033984000
• The square root of 21513215436440 is 4638234.0859900549
• The cube root of 21513215436440 is 27812.1849507361

Scales and comparisons

• 21,513,215,436,440 seconds is equal to 684,053 years, 36 weeks, 5 days, 47 minutes, 20 seconds.
• To count from 1 to 21,513,215,436,440 would take you about one million, seven hundred ten thousand, one hundred thirty-four 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 21513215436440 cubic inches would be around 2317.7 feet tall.

Recreational maths with 21513215436440

• 21513215436440 backwards is 04463451231512
• The number of decimal digits it has is: 14
• The sum of 21513215436440's digits is 41
• More coming soon!