640555809344

Names of 640555809344

• Cardinal: 640555809344 can be written as Six hundred forty billion, five hundred fifty-five million, eight hundred nine thousand, three hundred forty-four.

Scientific notation

• Scientific notation: 6.40555809344 × 10¹¹

Factors of 640555809344

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2668315

Divisors of 640555809344

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 8 11 16 22 31 32 44 62 64 88 121 124 176 242 248 341 352 484 496 682 704 968 992 1364 1936 1984 2728 3751 3872 5456 7502 7744 10912 15004 21824 30008 60016 120032 240064 2668271 5336542 10673084 21346168 29350981 42692336 58701962 82716401 85384672 117403924 165432802 170769344 234807848 322860791 330865604 469615696 645721582 661731208 909880411 939231392 1291443164 1323462416 1819760822 1878462784 2582886328 2646924832 3639521644 5165772656 5293849664 7279043288 10008684521 10331545312 14558086576 20017369042 20663090624 29116173152 40034738084 58232346304 80069476168 160138952336 320277904672 640555809344
• Sum of all divisors σ(n): 1442233035264
• Sum of proper divisors (its aliquot sum) s(n): 801677225920
• 640555809344 is an abundant number, because the sum of its proper divisors (801677225920) is greater than itself. Its abundance is 161121416576

Bases of 640555809344

• Binary: 1001010100100100000110011111101001000000₂
• Hexadecimal: 0x952419FA40
• Base-36: 869ME1Q8

Squares and roots of 640555809344

• 640555809344 squared (640555809344²) is 410311744884346877710336
• 640555809344 cubed (640555809344³) is 262827571827741665928583670074179584
• The square root of 640555809344 is 800347.3054518269
• The cube root of 640555809344 is 8620.2327360751

Scales and comparisons

• 640,555,809,344 seconds is equal to 20,367 years, 36 weeks, 9 hours, 15 minutes, 44 seconds.
• To count from 1 to 640,555,809,344 would take you about forty thousand, seven hundred thirty-five 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 640555809344 cubic inches would be around 718.4 feet tall.

Recreational maths with 640555809344

• 640555809344 backwards is 443908555046
• The number of decimal digits it has is: 12
• The sum of 640555809344's digits is 53
• More coming soon!