21381815685312

Names of 21381815685312

• Cardinal: 21381815685312 can be written as Twenty-one trillion, three hundred eighty-one billion, eight hundred fifteen million, six hundred eighty-five thousand, three hundred twelve.

Scientific notation

• Scientific notation: 2.1381815685312 × 10¹³

Factors of 21381815685312

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 32367

Divisors of 21381815685312

• Number of divisors d(n): 210
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 96 108 144 162 192 216 288 324 359 432 576 648 718 864 1077 1296 1436 1728 2154 2592 2872 3231 4308 5184 5744 6462 8616 9693 11488 12924 17232 19386 22976 25848 29079 32003 34464 38772 51696 58158 64006 68928 77544 96009 103392 116316 128012 128881 155088 192018 206784 232632 256024 257762 288027 310176 384036 386643 465264 512048 515524 576054 620352 768072 773286 864081 930528 1024096 1031048 1152108 1159929 1536144 1546572 1728162 1861056 2048192 2062096 2304216 2319858 2592243 3072288 3093144 3456324 3479787 4124192 4608432 4639716 5184486 6144576 6186288 6912648 6959574 8248384 9216864 9279432 10368972 10439361 11489077 12372576 13825296 13919148 18433728 18558864 20737944 20878722 22978154 24745152 27650592 27838296 34467231 37117728 41475888 41757444 45956308 55301184 55676592 68934462 74235456 82951776 83514888 91912616 103401693 111353184 137868924 165903552 167029776 183825232 206803386 222706368 275737848 310205079 334059552 367650464 413606772 551475696 620410158 668119104 735300928 827213544 930615237 1102951392 1240820316 1654427088 1861230474 2205902784 2481640632 3308854176 3722460948 4124578643 4963281264 6617708352 7444921896 8249157286 9926562528 12373735929 14889843792 16498314572 19853125056 24747471858 29779687584 32996629144 37121207787 49494943716 59559375168 65993258288 74242415574 98989887432 111363623361 131986516576 148484831148 197979774864 222727246722 263973033152 296969662296 334090870083 395959549728 445454493444 593939324592 668181740166 791919099456 890908986888 1187878649184 1336363480332 1781817973776 2375757298368 2672726960664 3563635947552 5345453921328 7127271895104 10690907842656 21381815685312
• Sum of all divisors σ(n): 63561430489788
• Sum of proper divisors (its aliquot sum) s(n): 42179614804476
• 21381815685312 is an abundant number, because the sum of its proper divisors (42179614804476) is greater than itself. Its abundance is 20797799119164

Bases of 21381815685312

• Binary: 100110111001001010111100001110101000011000000₂
• Hexadecimal: 0x1372578750C0
• Base-36: 7KUO4ZW00

Squares and roots of 21381815685312

• 21381815685312 squared (21381815685312²) is 457182042000654272212537344
• 21381815685312 cubed (21381815685312³) is 9775382156692559094960494768517752291328
• The square root of 21381815685312 is 4624047.5435825699
• The cube root of 21381815685312 is 27755.4449441887

Scales and comparisons

• 21,381,815,685,312 seconds is equal to 679,875 years, 31 weeks, 1 day, 13 hours, 55 minutes, 12 seconds.
• To count from 1 to 21,381,815,685,312 would take you about one million, six hundred ninety-nine thousand, six hundred eighty-nine 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 21381815685312 cubic inches would be around 2313 feet tall.

Recreational maths with 21381815685312

• 21381815685312 backwards is 21358651818312
• 21381815685312 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21381815685312's digits is 54
• More coming soon!