64046721921

Names of 64046721921

• Cardinal: 64046721921 can be written as Sixty-four billion, forty-six million, seven hundred twenty-one thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 6.4046721921 × 10¹⁰

Factors of 64046721921

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 799

Divisors of 64046721921

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 13 21 39 61 79 89 91 183 237 267 273 427 547 553 623 793 1027 1157 1281 1641 1659 1869 2379 3081 3471 3829 4819 5429 5551 7031 7111 7189 8099 11487 14457 16287 16653 21093 21333 21567 24297 33367 33733 38003 43213 48683 49217 49777 62647 70577 91403 100101 101199 114009 129639 146049 147651 149331 187941 211731 233569 274209 302491 340781 428891 433771 438529 494039 561769 632879 639821 700707 907473 1022343 1286673 1301313 1315587 1482117 1685307 1898637 1919463 2635993 2969663 3002237 3036397 3845957 3932383 4430153 5575583 7907979 8908989 9006711 9109191 11537871 11797149 13290459 16726749 18451951 20787641 26921699 34267909 38605619 39029081 49997441 55355853 62362923 80765097 102803727 115816857 117087243 149992323 234603377 239875363 270239333 349982087 703810131 719626089 810717999 1049946261 1642223639 3049843901 4926670917 9149531703 21348907307 64046721921
• Sum of all divisors σ(n): 109592985600
• Sum of proper divisors (its aliquot sum) s(n): 45546263679
• 64046721921 is a deficient number, because the sum of its proper divisors (45546263679) is less than itself. Its deficiency is 18500458242

Bases of 64046721921

• Binary: 111011101001011110110110101110000001₂
• Hexadecimal: 0xEE97B6B81
• Base-36: TF7RIWX

Squares and roots of 64046721921

• 64046721921 squared (64046721921²) is 4101982588825901930241
• 64046721921 cubed (64046721921³) is 262718538191316222808162467512961
• The square root of 64046721921 is 253074.5382708423
• The cube root of 64046721921 is 4000.9731365863

Scales and comparisons

• 64,046,721,921 seconds is equal to 2,036 years, 25 weeks, 2 days, 12 hours, 5 minutes, 21 seconds.
• To count from 1 to 64,046,721,921 would take you about four thousand and seventy-two 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 64046721921 cubic inches would be around 333.4 feet tall.

Recreational maths with 64046721921

• 64046721921 backwards is 12912764046
• The number of decimal digits it has is: 11
• The sum of 64046721921's digits is 42
• More coming soon!