640663507072

Names of 640663507072

• Cardinal: 640663507072 can be written as Six hundred forty billion, six hundred sixty-three million, five hundred seven thousand and seventy-two.

Scientific notation

• Scientific notation: 6.40663507072 × 10¹¹

Factors of 640663507072

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 62721

Divisors of 640663507072

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 16 32 64 128 239 337 478 674 956 1348 1912 2696 3824 5392 7648 10784 15296 21568 30592 43136 62143 80543 124286 161086 248572 322172 497144 644344 994288 1288688 1988576 2577376 3977152 5154752 7954304 10309504 14852177 20942191 29704354 41884382 59408708 83768764 118817416 167537528 237634832 335075056 475269664 670150112 950539328 1340300224 1901078656 2680600448 5005183649 10010367298 20020734596 40041469192 80082938384 160165876768 320331753536 640663507072
• Sum of all divisors σ(n): 1285485926400
• Sum of proper divisors (its aliquot sum) s(n): 644822419328
• 640663507072 is an abundant number, because the sum of its proper divisors (644822419328) is greater than itself. Its abundance is 4158912256

Bases of 640663507072

• Binary: 1001010100101010100001010101000010000000₂
• Hexadecimal: 0x952A855080
• Base-36: 86BEIDTS

Squares and roots of 640663507072

• 640663507072 squared (640663507072²) is 410449729293794594013184
• 640663507072 cubed (640663507072³) is 262960163046115458447280876445237248
• The square root of 640663507072 is 800414.5844948105
• The cube root of 640663507072 is 8620.7158204225

Scales and comparisons

• 640,663,507,072 seconds is equal to 20,371 years, 6 weeks, 21 hours, 17 minutes, 52 seconds.
• To count from 1 to 640,663,507,072 would take you about forty thousand, seven hundred forty-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 640663507072 cubic inches would be around 718.4 feet tall.

Recreational maths with 640663507072

• 640663507072 backwards is 270705366046
• The number of decimal digits it has is: 12
• The sum of 640663507072's digits is 46
• More coming soon!