21129379938368

Names of 21129379938368

• Cardinal: 21129379938368 can be written as Twenty-one trillion, one hundred twenty-nine billion, three hundred seventy-nine million, nine hundred thirty-eight thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1129379938368 × 10¹³

Factors of 21129379938368

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 273

Divisors of 21129379938368

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 101 104 157 202 208 314 404 416 628 808 832 1256 1313 1616 2041 2512 2626 3232 4082 5024 5252 6464 8164 10048 10201 10504 15857 16328 20402 21008 24649 31714 32656 40804 42016 49298 63428 65312 81608 84032 98596 126856 130624 132613 163216 197192 206141 253712 265226 320437 326432 394384 412282 507424 530452 640874 652864 788768 824564 1014848 1030301 1060904 1281748 1577536 1601557 1649128 2060602 2121808 2489549 2563496 3203114 3298256 4121204 4243616 4979098 5126992 6406228 6596512 8242408 8487232 9958196 10253984 12812456 13193024 13393913 16484816 19916392 20507968 20820241 25624912 26787826 32364137 32969632 39832784 41640482 51249824 53575652 64728274 65939264 79665568 83280964 102499648 107151304 129456548 159331136 161757257 166561928 214302608 251444449 258913096 323514514 333123856 428605216 502888898 517826192 647029028 666247712 857210432 1005777796 1035652384 1294058056 1332495424 2011555592 2071304768 2102844341 2588116112 3268777837 4023111184 4205688682 5176232224 6537555674 8046222368 8411377364 10352464448 13075111348 16092444736 16822754728 25395889349 26150222696 33645509456 50791778698 52300445392 67291018912 101583557396 104600890784 134582037824 203167114792 209201781568 330146561537 406334229584 660293123074 812668459168 1320586246148 1625336918336 2641172492296 5282344984592 10564689969184 21129379938368
• Sum of all divisors σ(n): 45897760374984
• Sum of proper divisors (its aliquot sum) s(n): 24768380436616
• 21129379938368 is an abundant number, because the sum of its proper divisors (24768380436616) is greater than itself. Its abundance is 3639000498248

Bases of 21129379938368

• Binary: 100110011011110010001001011111000000001000000₂
• Hexadecimal: 0x1337912F8040
• Base-36: 7HMPB9R28

Squares and roots of 21129379938368

• 21129379938368 squared (21129379938368²) is 446450696579908107478503424
• 21129379938368 cubed (21129379938368³) is 9433226391785929436381244196881996972032
• The square root of 21129379938368 is 4596670.5274979193
• The cube root of 21129379938368 is 27645.7844446895

Scales and comparisons

• 21,129,379,938,368 seconds is equal to 671,848 years, 48 weeks, 13 hours, 6 minutes, 8 seconds.
• To count from 1 to 21,129,379,938,368 would take you about one million, six hundred seventy-nine thousand, six hundred twenty-two 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 21129379938368 cubic inches would be around 2303.8 feet tall.

Recreational maths with 21129379938368

• 21129379938368 backwards is 86383997392112
• The number of decimal digits it has is: 14
• The sum of 21129379938368's digits is 71
• More coming soon!