640518315430

Names of 640518315430

• Cardinal: 640518315430 can be written as Six hundred forty billion, five hundred eighteen million, three hundred fifteen thousand, four hundred thirty.

Scientific notation

• Scientific notation: 6.4051831543 × 10¹¹

Factors of 640518315430

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4196

Divisors of 640518315430

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 5 7 10 14 23 35 46 70 115 161 230 322 529 805 1058 1610 2645 3703 4159 5290 7406 8318 18515 20795 29113 37030 41590 58226 95657 145565 191314 291130 478285 669599 956570 1339198 2200111 3347995 4400222 6695990 11000555 15400777 17297281 22001110 30801554 34594562 77003885 86486405 121080967 154007770 172972810 242161934 397837463 605404835 795674926 1210809670 1989187315 2784862241 3978374630 5569724482 9150261649 13924311205 18300523298 27848622410 45751308245 64051831543 91502616490 128103663086 320259157715 640518315430
• Sum of all divisors σ(n): 1377748349712
• Sum of proper divisors (its aliquot sum) s(n): 737230034282
• 640518315430 is an abundant number, because the sum of its proper divisors (737230034282) is greater than itself. Its abundance is 96711718852

Bases of 640518315430

• Binary: 1001010100100001110111011101110110100110₂
• Hexadecimal: 0x9521DDDDA6
• Base-36: 86902F8M

Squares and roots of 640518315430

• 640518315430 squared (640518315430²) is 410263712401284976084900
• 640518315430 cubed (640518315430³) is 262781421949329053049267984660007000
• The square root of 640518315430 is 800323.8815817007
• The cube root of 640518315430 is 8620.0645422625

Scales and comparisons

• 640,518,315,430 seconds is equal to 20,366 years, 26 weeks, 10 hours, 17 minutes, 10 seconds.
• To count from 1 to 640,518,315,430 would take you about forty thousand, seven hundred thirty-three 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 640518315430 cubic inches would be around 718.3 feet tall.

Recreational maths with 640518315430

• 640518315430 backwards is 034513815046
• The number of decimal digits it has is: 12
• The sum of 640518315430's digits is 40
• More coming soon!