21137918788644438

Names of 21137918788644438

• Cardinal: 21137918788644438 can be written as Twenty-one quadrillion, one hundred thirty-seven trillion, nine hundred eighteen billion, seven hundred eighty-eight million, six hundred forty-four thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1137918788644438 × 10¹⁶

Factors of 21137918788644438

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 61767

Divisors of 21137918788644438

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 6 11 19 22 33 38 57 66 79 114 158 209 237 418 474 627 869 1254 1501 1723 1738 2143 2607 3002 3446 4286 4503 5169 5214 6429 9006 10338 12858 16511 18953 23573 32737 33022 37906 40717 47146 49533 56859 57787 65474 70719 81434 98211 99066 113718 115574 122151 136117 141438 169297 173361 196422 244302 272234 338594 346722 360107 408351 447887 507891 635657 720214 816702 895774 1015782 1080321 1097953 1271314 1343661 1497287 1862267 1906971 2160642 2195906 2586223 2687322 2994574 3216643 3293859 3692389 3724534 3813942 4491861 4565173 5172446 5586801 6433286 6587718 7384778 7758669 8983722 9130346 9649929 11077167 11173602 12077483 13695519 15517338 19299858 22154334 24154966 27391038 28448453 35383073 36232449 40616279 50216903 56896906 70155391 70766146 72464898 81232558 85345359 86738287 99567001 100433806 106149219 121848837 123837541 140310782 150650709 170690718 173476574 199134002 210466173 212298438 243697674 247675082 260214861 291698731 298701003 301301418 371512623 420932346 520429722 583397462 597402006 743025246 771709301 875096193 954121157 1095237011 1362212951 1543418602 1750192386 1891773019 1908242314 2190474022 2315127903 2352913279 2724425902 2862363471 3208686041 3285711033 3783546038 4086638853 4630255806 4705826558 5542275889 5675319057 5724726942 6417372082 6571422066 7058739837 7865793079 8173277706 9626058123 9783165739 11084551778 11350638114 14117479674 15731586158 16626827667 19252116246 19566331478 20809503209 23597379237 25882046069 29349497217 33253655334 41619006418 47194758474 51764092138 58698994434 60965034779 62428509627 77646138207 86523723869 107614823129 121930069558 124857019254 149450068501 155292276414 173047447738 182895104337 185880149041 213372083143 215229646258 259571171607 298900137002 322844469387 365790208674 371760298082 426744166286 448350205503 519142343214 557640447123 640116249429 645688938774 896700411006 1115280894246 1280232498858 1643950753511 2044681639451 2347092914573 3287901507022 4054069579717 4089363278902 4694185829146 4931852260533 6134044918353 7041278743719 8108139159434 9863704521066 12162208739151 12268089836706 14082557487438 16856394568297 24324417478302 33712789136594 44594765376887 50569183704891 89189530753774 101138367409782 133784296130661 185420340251267 267568592261322 320271496797643 370840680502534 556261020753801 640542993595286 960814490392929 1112522041507602 1921628980785858 3522986464774073 7045972929548146 10568959394322219 21137918788644438
• Sum of all divisors σ(n): 49213265294131200
• Sum of proper divisors (its aliquot sum) s(n): 28075346505486762
• 21137918788644438 is an abundant number, because the sum of its proper divisors (28075346505486762) is greater than itself. Its abundance is 6937427716842324

Bases of 21137918788644438

• Binary: 1001011000110001101001100111100101100000010111001010110₂
• Hexadecimal: 0x4B18D33CB02E56
• Base-36: 5S4RLU1VA6U

Squares and roots of 21137918788644438

• 21137918788644438 squared (21137918788644438²) is 446811610715327545160217588335844
• 21137918788644438 cubed (21137918788644438³) is 9444667541124006617202246083200246843629046635672
• The square root of 21137918788644438 is 145388853.7290408587
• The cube root of 21137918788644438 is 276495.0803434743

Scales and comparisons

• 21,137,918,788,644,438 seconds is equal to 672,120,433 years, 31 weeks, 2 days, 12 hours, 47 minutes, 18 seconds.
• To count from 1 to 21,137,918,788,644,438 would take you about two billion, sixteen million, three hundred sixty-one thousand, three 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 21137918788644438 cubic inches would be around 23041.3 feet tall.

Recreational maths with 21137918788644438

• 21137918788644438 backwards is 83444688781973112
• The number of decimal digits it has is: 17
• The sum of 21137918788644438's digits is 84
• More coming soon!