640399633760768

Names of 640399633760768

• Cardinal: 640399633760768 can be written as Six hundred forty trillion, three hundred ninety-nine billion, six hundred thirty-three million, seven hundred sixty thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 6.40399633760768 × 10¹⁴

Factors of 640399633760768

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 159778

Divisors of 640399633760768

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 392 448 512 784 896 1568 1792 3136 3584 6272 12544 25088 159769 319538 639076 1118383 1278152 2236766 2556304 4473532 5112608 7828681 8947064 10225216 15657362 17894128 20450432 31314724 35788256 40900864 62629448 71576512 81801728 125258896 143153024 250517792 286306048 501035584 572612096 1002071168 2004142336 4008284672 25526133361 51052266722 102104533444 178682933527 204209066888 357365867054 408418133776 714731734108 816836267552 1250780534689 1429463468216 1633672535104 2501561069378 2858926936432 3267345070208 5003122138756 5717853872864 6534690140416 10006244277512 11435707745728 13069380280832 20012488555024 22871415491456 40024977110048 45742830982912 80049954220096 91485661965824 160099908440192 320199816880384 640399633760768
• Sum of all divisors σ(n): 1488463678761741
• Sum of proper divisors (its aliquot sum) s(n): 848064045000973
• 640399633760768 is an abundant number, because the sum of its proper divisors (848064045000973) is greater than itself. Its abundance is 207664411240205

Bases of 640399633760768

• Binary: 10010001100111000010101000101011110100001000000000₂
• Hexadecimal: 0x24670A8AF4200
• Base-36: 6B03J3B94W

Squares and roots of 640399633760768

• 640399633760768 squared (640399633760768²) is 410111690920925785575055949824
• 640399633760768 cubed (640399633760768³) is 262635376666770155981033392262120179427704832
• The square root of 640399633760768 is 25306118.5044401465
• The cube root of 640399633760768 is 86195.3210531929

Scales and comparisons

• 640,399,633,760,768 seconds is equal to 20,362,727 years, 24 weeks, 2 days, 3 hours, 46 minutes, 8 seconds.
• To count from 1 to 640,399,633,760,768 would take you about fifty million, nine hundred six thousand, eight hundred eighteen 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 640399633760768 cubic inches would be around 7182.9 feet tall.

Recreational maths with 640399633760768

• 640399633760768 backwards is 867067336993046
• The number of decimal digits it has is: 15
• The sum of 640399633760768's digits is 77
• More coming soon!