21019918055742

Names of 21019918055742

• Cardinal: 21019918055742 can be written as Twenty-one trillion, nineteen billion, nine hundred eighteen million, fifty-five thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.1019918055742 × 10¹³

Factors of 21019918055742

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 103

Divisors of 21019918055742

• Number of divisors d(n): 264
• Complete list of divisors:
  1 2 3 6 9 18 19 27 38 54 57 79 81 114 158 162 171 237 243 342 361 474 486 513 711 722 729 1026 1083 1422 1458 1501 1539 2133 2166 2187 3002 3078 3249 4266 4374 4503 4617 6241 6399 6498 6561 9006 9234 9747 12482 12798 13122 13509 13851 18723 19197 19494 19683 27018 27702 28519 29241 37446 38394 39366 40527 41553 56169 57038 57591 58482 59049 81054 83106 85557 87723 112338 115182 118098 118579 121581 124659 168507 171114 172773 175446 237158 243162 249318 256671 263169 337014 345546 355737 364743 373977 493039 505521 513342 518319 526338 711474 729486 747954 770013 789507 986078 1011042 1036638 1067211 1094229 1121931 1479117 1516563 1540026 1554957 1579014 2134422 2188458 2243862 2253001 2310039 2368521 2958234 3033126 3109914 3201633 3282687 4437351 4506002 4549689 4620078 4664871 4737042 6403266 6565374 6759003 6930117 7105563 8874702 9099378 9329742 9367741 9604899 9848061 13312053 13518006 13649067 13860234 14211126 18735482 19209798 19696122 20277009 20790351 21316689 26624106 27298134 28103223 28814697 29544183 39936159 40554018 40947201 41580702 42633378 56206446 57629394 59088366 60831027 62371053 79872318 81894402 84309669 86444091 88632549 119808477 121662054 122841603 124742106 168619338 172888182 177265098 177987079 182493081 187113159 239616954 245683206 252929007 259332273 355974158 359425431 364986162 368524809 374226318 505858014 518664546 533961237 547479243 561339477 718850862 737049618 758787021 777996819 1067922474 1078276293 1094958486 1122678954 1517574042 1555993638 1601883711 1642437729 1684018431 2156552586 2276361063 2333990457 3203767422 3234828879 3284875458 3368036862 4552722126 4667980914 4805651133 4927313187 6469657758 6829083189 7001971371 9611302266 9704486637 9854626374 13658166378 14003942742 14416953399 14781939561 19408973274 20487249567 28833906798 29113459911 29563879122 40974499134 43250860197 44345818683 58226919822 61461748701 86501720394 88691637366 122923497402 129752580591 133037456049 184385246103 259505161182 266074912098 368770492206 389257741773 553155738309 778515483546 1106311476618 1167773225319 2335546450638 3503319675957 7006639351914 10509959027871 21019918055742
• Sum of all divisors σ(n): 50554676579040
• Sum of proper divisors (its aliquot sum) s(n): 29534758523298
• 21019918055742 is an abundant number, because the sum of its proper divisors (29534758523298) is greater than itself. Its abundance is 8514840467556

Bases of 21019918055742

• Binary: 100110001111000010100101111111011100100111110₂
• Hexadecimal: 0x131E14BFB93E
• Base-36: 7G8F0HPVI

Squares and roots of 21019918055742

• 21019918055742 squared (21019918055742²) is 441836955070108541419170564
• 21019918055742 cubed (21019918055742³) is 9287376589572241341248559199081157578488
• The square root of 21019918055742 is 4584748.4179333113
• The cube root of 21019918055742 is 27597.9616115811

Scales and comparisons

• 21,019,918,055,742 seconds is equal to 668,368 years, 19 weeks, 3 days, 14 hours, 35 minutes, 42 seconds.
• To count from 1 to 21,019,918,055,742 would take you about one million, six hundred seventy thousand, nine hundred twenty 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 21019918055742 cubic inches would be around 2299.8 feet tall.

Recreational maths with 21019918055742

• 21019918055742 backwards is 24755081991012
• 21019918055742 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21019918055742's digits is 54
• More coming soon!