640738313736

Names of 640738313736

• Cardinal: 640738313736 can be written as Six hundred forty billion, seven hundred thirty-eight million, three hundred thirteen thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 6.40738313736 × 10¹¹

Factors of 640738313736

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 204883

Divisors of 640738313736

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 12 19 24 38 57 76 114 152 228 361 456 722 1083 1444 2166 2888 4332 6859 8664 13718 20577 27436 41154 54872 82308 130321 164616 204859 260642 390963 409718 521284 614577 781926 819436 1042568 1229154 1563852 1638872 2458308 3127704 3892321 4916616 7784642 11676963 15569284 23353926 31138568 46707852 73954099 93415704 147908198 221862297 295816396 443724594 591632792 887449188 1405127881 1774898376 2810255762 4215383643 5620511524 8430767286 11241023048 16861534572 26697429739 33723069144 53394859478 80092289217 106789718956 160184578434 213579437912 320369156868 640738313736
• Sum of all divisors σ(n): 1690844787600
• Sum of proper divisors (its aliquot sum) s(n): 1050106473864
• 640738313736 is an abundant number, because the sum of its proper divisors (1050106473864) is greater than itself. Its abundance is 409368160128

Bases of 640738313736

• Binary: 1001010100101110111110101100011000001000₂
• Hexadecimal: 0x952EFAC608
• Base-36: 86CN1R0O

Squares and roots of 640738313736

• 640738313736 squared (640738313736²) is 410545586689252766277696
• 640738313736 cubed (640738313736³) is 263052286927028624498644260547232256
• The square root of 640738313736 is 800461.3130789021
• The cube root of 640738313736 is 8621.0513381507

Scales and comparisons

• 640,738,313,736 seconds is equal to 20,373 years, 25 weeks, 5 days, 16 hours, 55 minutes, 36 seconds.
• To count from 1 to 640,738,313,736 would take you about forty thousand, seven hundred forty-six 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 640738313736 cubic inches would be around 718.4 feet tall.

Recreational maths with 640738313736

• 640738313736 backwards is 637313837046
• The number of decimal digits it has is: 12
• The sum of 640738313736's digits is 51
• More coming soon!