21349364751

Names of 21349364751

• Cardinal: 21349364751 can be written as Twenty-one billion, three hundred forty-nine million, three hundred sixty-four thousand, seven hundred fifty-one.

Scientific notation

• Scientific notation: 2.1349364751 × 10¹⁰

Factors of 21349364751

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 736

Divisors of 21349364751

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 9 11 13 27 33 39 99 117 121 143 297 351 363 429 709 1089 1287 1573 2127 3267 3861 4719 6381 7799 9217 14157 19143 23397 27651 42471 70191 82953 85789 101387 210573 248859 257367 304161 502681 772101 912483 1115257 1508043 2316303 2737449 3345771 4524129 5529491 6534853 10037313 13572387 16588473 19604559 30111939 49765419 58813677 60824401 71883383 149296257 176441031 182473203 215650149 547419609 646950447 790717213 1642258827 1940851341 2372151639 7116454917 21349364751
• Sum of all divisors σ(n): 37492561680
• Sum of proper divisors (its aliquot sum) s(n): 16143196929
• 21349364751 is a deficient number, because the sum of its proper divisors (16143196929) is less than itself. Its deficiency is 5206167822

Bases of 21349364751

• Binary: 10011111000100001010111010000001111₂
• Hexadecimal: 0x4F885740F
• Base-36: 9T2UZ9R

Squares and roots of 21349364751

• 21349364751 squared (21349364751²) is 455795375271241292001
• 21349364751 cubed (21349364751³) is 9730941718484655903461847656751
• The square root of 21349364751 is 146114.2181685273
• The cube root of 21349364751 is 2774.1396462147

Scales and comparisons

• 21,349,364,751 seconds is equal to 678 years, 43 weeks, 6 days, 3 hours, 5 minutes, 51 seconds.
• To count from 1 to 21,349,364,751 would take you about one thousand, three hundred fifty-seven 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 21349364751 cubic inches would be around 231.2 feet tall.

Recreational maths with 21349364751

• 21349364751 backwards is 15746394312
• The number of decimal digits it has is: 11
• The sum of 21349364751's digits is 45
• More coming soon!