640500994888

Names of 640500994888

• Cardinal: 640500994888 can be written as Six hundred forty billion, five hundred million, nine hundred ninety-four thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 6.40500994888 × 10¹¹

Factors of 640500994888

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 428

Divisors of 640500994888

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 8 89 178 337 356 674 712 1348 2696 7921 15842 29993 31684 59986 63368 113569 119972 227138 239944 454276 704969 908552 1409938 2669377 2819876 5338754 5639752 10107641 10677508 20215282 21355016 40430564 80861128 237574553 475149106 899580049 950298212 1799160098 1900596424 3598320196 7196640392 80062624361 160125248722 320250497444 640500994888
• Sum of all divisors σ(n): 1218201192900
• Sum of proper divisors (its aliquot sum) s(n): 577700198012
• 640500994888 is a deficient number, because the sum of its proper divisors (577700198012) is less than itself. Its deficiency is 62800796876

Bases of 640500994888

• Binary: 1001010100100000110101011001001101001000₂
• Hexadecimal: 0x9520D59348
• Base-36: 868PR6MG

Squares and roots of 640500994888

• 640500994888 squared (640500994888²) is 410241524452517802132544
• 640500994888 cubed (640500994888³) is 262760104556207431782425560042435072
• The square root of 640500994888 is 800313.0605506823
• The cube root of 640500994888 is 8619.9868418897

Scales and comparisons

• 640,500,994,888 seconds is equal to 20,365 years, 49 weeks, 2 days, 23 hours, 1 minute, 28 seconds.
• To count from 1 to 640,500,994,888 would take you about forty thousand, seven hundred thirty-one 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 640500994888 cubic inches would be around 718.3 feet tall.

Recreational maths with 640500994888

• 640500994888 backwards is 888499005046
• The number of decimal digits it has is: 12
• The sum of 640500994888's digits is 61
• More coming soon!