64139437908

Names of 64139437908

• Cardinal: 64139437908 can be written as Sixty-four billion, one hundred thirty-nine million, four hundred thirty-seven thousand, nine hundred eight.

Scientific notation

• Scientific notation: 6.4139437908 × 10¹⁰

Factors of 64139437908

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 113369

Divisors of 64139437908

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 52 63 78 84 91 117 126 156 173 182 234 252 273 346 364 468 519 546 692 819 1038 1092 1211 1557 1638 2076 2249 2422 3114 3276 3633 4498 4844 6228 6747 7266 8996 10899 13494 14532 15743 20241 21798 26988 31486 40482 43596 47229 62972 80964 94458 113171 141687 188916 226342 283374 339513 452684 566748 679026 792197 1018539 1358052 1471223 1584394 2037078 2376591 2942446 3168788 4074156 4413669 4753182 5884892 7129773 8827338 9506364 10298561 13241007 14259546 17654676 19578583 20597122 26482014 28519092 30895683 39157166 41194244 52964028 58735749 61791366 78314332 92687049 117471498 123582732 137050081 176207247 185374098 234942996 254521579 274100162 352414494 370748196 411150243 509043158 548200324 704828988 763564737 822300486 1018086316 1233450729 1527129474 1644600972 1781651053 2290694211 2466901458 3054258948 3563302106 4581388422 4933802916 5344953159 7126604212 9162776844 10689906318 16034859477 21379812636 32069718954 64139437908
• Sum of all divisors σ(n): 200700130176
• Sum of proper divisors (its aliquot sum) s(n): 136560692268
• 64139437908 is an abundant number, because the sum of its proper divisors (136560692268) is greater than itself. Its abundance is 72421254360

Bases of 64139437908

• Binary: 111011101111000000100010011101010100₂
• Hexadecimal: 0xEEF022754
• Base-36: TGQYR10

Squares and roots of 64139437908

• 64139437908 squared (64139437908²) is 4113867495154187416464
• 64139437908 cubed (64139437908³) is 263861148767181494684487664917312
• The square root of 64139437908 is 253257.6512328897
• The cube root of 64139437908 is 4002.9028492735

Scales and comparisons

• 64,139,437,908 seconds is equal to 2,039 years, 22 weeks, 4 days, 14 hours, 31 minutes, 48 seconds.
• To count from 1 to 64,139,437,908 would take you about four thousand and seventy-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 64139437908 cubic inches would be around 333.6 feet tall.

Recreational maths with 64139437908

• 64139437908 backwards is 80973493146
• The number of decimal digits it has is: 11
• The sum of 64139437908's digits is 54
• More coming soon!