21321593664

Names of 21321593664

• Cardinal: 21321593664 can be written as Twenty-one billion, three hundred twenty-one million, five hundred ninety-three thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1321593664 × 10¹⁰

Factors of 21321593664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 30163

Divisors of 21321593664

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 17 21 24 28 31 32 34 42 48 51 56 62 64 68 84 93 96 102 112 119 124 136 168 186 192 204 217 224 238 248 272 336 357 372 408 434 448 476 496 527 544 651 672 714 744 816 868 952 992 1054 1088 1302 1344 1428 1488 1581 1632 1736 1904 1984 2108 2604 2856 2976 3162 3264 3472 3689 3808 4216 5208 5712 5952 6324 6944 7378 7616 8432 10416 11067 11424 12648 13888 14756 16864 20832 22134 22848 25296 29512 30103 33728 41664 44268 50592 59024 60206 88536 90309 101184 118048 120412 177072 180618 210721 236096 240824 354144 361236 421442 481648 511751 632163 708288 722472 842884 933193 963296 1023502 1264326 1444944 1535253 1685768 1866386 1926592 2047004 2528652 2799579 2889888 3070506 3371536 3582257 3732772 4094008 5057304 5599158 5779776 6141012 6532351 6743072 7164514 7465544 8188016 10114608 10746771 11198316 12282024 13064702 13486144 14329028 14931088 15864281 16376032 19597053 20229216 21493542 22396632 24564048 26129404 28658056 29862176 31728562 32752064 39194106 40458432 42987084 44793264 47592843 49128096 52258808 57316112 59724352 63457124 78388212 85974168 89586528 95185686 98256192 104517616 111049967 114632224 126914248 156776424 171948336 179173056 190371372 209035232 222099934 229264448 253828496 313552848 333149901 343896672 380742744 418070464 444199868 507656992 627105696 666299802 687793344 761485488 888399736 1015313984 1254211392 1332599604 1522970976 1776799472 2665199208 3045941952 3553598944 5330398416 7107197888 10660796832 21321593664
• Sum of all divisors σ(n): 70469369856
• Sum of proper divisors (its aliquot sum) s(n): 49147776192
• 21321593664 is an abundant number, because the sum of its proper divisors (49147776192) is greater than itself. Its abundance is 27826182528

Bases of 21321593664

• Binary: 10011110110110111011011001101000000₂
• Hexadecimal: 0x4F6DDB340
• Base-36: 9SMBQYO

Squares and roots of 21321593664

• 21321593664 squared (21321593664²) is 454610356372724944896
• 21321593664 cubed (21321593664³) is 9693017294025474207509302738944
• The square root of 21321593664 is 146019.1551269901
• The cube root of 21321593664 is 2772.9362645491

Scales and comparisons

• 21,321,593,664 seconds is equal to 677 years, 49 weeks, 6 days, 16 hours, 54 minutes, 24 seconds.
• To count from 1 to 21,321,593,664 would take you about one thousand, three hundred fifty-five 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 21321593664 cubic inches would be around 231.1 feet tall.

Recreational maths with 21321593664

• 21321593664 backwards is 46639512312
• 21321593664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21321593664's digits is 42
• More coming soon!