21278810896816

Names of 21278810896816

• Cardinal: 21278810896816 can be written as Twenty-one trillion, two hundred seventy-eight billion, eight hundred ten million, eight hundred ninety-six thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 2.1278810896816 × 10¹³

Factors of 21278810896816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2874

Divisors of 21278810896816

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 8 11 16 22 31 44 62 88 121 124 137 176 242 248 274 341 484 496 548 682 961 968 1096 1364 1507 1922 1936 2192 2693 2728 3014 3751 3844 4247 5386 5456 6028 7502 7688 8494 10571 10772 12056 15004 15376 16577 16988 21142 21544 24112 29623 29791 30008 33154 33976 42284 43088 46717 59246 59582 60016 66308 67952 83483 84568 93434 116281 118492 119164 131657 132616 166966 169136 186868 232562 236984 238328 263314 265232 325853 327701 333932 368941 373736 465124 473968 476656 513887 526628 651706 655402 667864 737882 747472 918313 930248 1027774 1053256 1303412 1310804 1335728 1448227 1475764 1836626 1860496 2055548 2106512 2587973 2606824 2621608 2896454 2951528 3604711 3673252 4058351 4081367 4111096 5175946 5213648 5243216 5792908 5903056 7209422 7346504 8116702 8162734 8222192 10101443 10351892 11437171 11585816 14418844 14693008 15930497 16233404 16325468 20202886 20703784 22874342 23171632 28467703 28837688 31860994 32466808 32650936 40405772 41407568 44641861 44895037 45748684 56935406 57675376 63721988 64933616 65301872 80227163 80811544 89283722 89790074 91497368 113870812 125808881 127443976 160454326 161623088 178567444 179580148 182994736 227741624 251617762 254887952 313144733 320908652 354552301 357134888 359160296 455483248 493845407 503235524 626289466 641817304 709104602 714269776 718320592 882498793 987690814 1006471048 1252578932 1283634608 1383897691 1418209204 1764997586 1975381628 2012942096 2505157864 2767795382 2836418408 3529995172 3900075311 3950763256 5010315728 5535590764 5672836816 7059990344 7800150622 7901526512 9707486723 10991121331 11071181528 14119980688 15600301244 19414973446 21982242662 22142363056 31200602488 38829946892 42900828421 43964485324 62401204976 77659893784 85801656842 87928970648 120902334641 155319787568 171603313684 175857941296 241804669282 343206627368 483609338564 686413254736 967218677128 1329925681051 1934437354256 2659851362102 5319702724204 10639405448408 21278810896816
• Sum of all divisors σ(n): 47186206389504
• Sum of proper divisors (its aliquot sum) s(n): 25907395492688
• 21278810896816 is an abundant number, because the sum of its proper divisors (25907395492688) is greater than itself. Its abundance is 4628584595872

Bases of 21278810896816

• Binary: 100110101101001011011111101101111100110110000₂
• Hexadecimal: 0x135A5BF6F9B0
• Base-36: 7JJCMLSJ4

Squares and roots of 21278810896816

• 21278810896816 squared (21278810896816²) is 452787793182455342198937856
• 21278810896816 cubed (21278810896816³) is 9634785827516100090853051009114012266496
• The square root of 21278810896816 is 4612896.1506645693
• The cube root of 21278810896816 is 27710.8034756661

Scales and comparisons

• 21,278,810,896,816 seconds is equal to 676,600 years, 19 weeks, 12 hours, 40 minutes, 16 seconds.
• To count from 1 to 21,278,810,896,816 would take you about one million, six hundred ninety-one thousand, five hundred 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 21278810896816 cubic inches would be around 2309.2 feet tall.

Recreational maths with 21278810896816

• 21278810896816 backwards is 61869801887212
• The number of decimal digits it has is: 14
• The sum of 21278810896816's digits is 67
• More coming soon!