18387390103212321

Names of 18387390103212321

• Cardinal: 18387390103212321 can be written as Eighteen quadrillion, three hundred eighty-seven trillion, three hundred ninety billion, one hundred three million, two hundred twelve thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 1.8387390103212321 × 10¹⁶

Factors of 18387390103212321

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2252

Divisors of 18387390103212321

• Number of divisors d(n): 135
• Complete list of divisors:
  1 3 9 23 27 69 81 207 349 529 621 1047 1587 1863 1877 3141 4761 5631 8027 9423 14283 16893 24081 28269 42849 43171 50679 72243 121801 129513 152037 184621 216729 365403 388539 553863 650187 655073 992933 1096209 1165617 1661589 1965219 2801423 2978799 3288627 3496851 3523129 4984767 5895657 8404269 8936397 9865881 10569387 14954301 15066679 17686971 25212807 26809191 31708161 45200037 53060913 64432729 75638421 80427573 81031967 95124483 135600111 193298187 226915263 228620477 243095901 285373449 346533617 406800333 579894561 685861431 729287703 1039600851 1220400999 1229572021 1739683683 1863735241 2057584293 2187863109 3118802553 3688716063 5219051049 5258270971 5591205723 6172752879 6563589327 9356407659 11066148189 15774812913 16773617169 18518258637 28069222977 28280156483 33198444567 47324438739 50320851507 84840469449 99595333701 120940232333 141973316217 150962554521 254521408347 362820696999 425919948651 429120635329 650443599109 763564225041 1088462090997 1287361905987 1951330797327 2290692675123 3265386272991 3862085717961 5853992391981 9796158818973 9869774612567 11586257153883 17561977175943 29609323837701 34758771461649 52685931527829 88827971513103 227004816089041 266483914539309 681014448267123 799451743617927 2043043344801369 6129130034404107 18387390103212321
• Sum of all divisors σ(n): 28811608981504041
• Sum of proper divisors (its aliquot sum) s(n): 10424218878291720
• 18387390103212321 is a deficient number, because the sum of its proper divisors (10424218878291720) is less than itself. Its deficiency is 7963171224920601

Bases of 18387390103212321

• Binary: 1000001010100110011101111011111011100101101000100100001₂
• Hexadecimal: 0x41533BDF72D121
• Base-36: 511SAEF3X29

Squares and roots of 18387390103212321

• 18387390103212321 squared (18387390103212321²) is 338096114807710408717163206207041
• 18387390103212321 cubed (18387390103212321³) is 6216705155349831022528139545736330661420308152161
• 18387390103212321 is a perfect square number. Its square root is 135600111
• The cube root of 18387390103212321 is 263940.9020953347

Scales and comparisons

• 18,387,390,103,212,321 seconds is equal to 584,662,129 years, 18 weeks, 1 day, 11 hours, 25 minutes, 21 seconds.
• To count from 1 to 18,387,390,103,212,321 would take you about one billion, seven hundred fifty-three million, nine hundred eighty-six thousand, three hundred eighty-eight 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 18387390103212321 cubic inches would be around 21995.1 feet tall.

Recreational maths with 18387390103212321

• 18387390103212321 backwards is 12321230109378381
• The number of decimal digits it has is: 17
• The sum of 18387390103212321's digits is 54
• More coming soon!