640349907326128720629

Names of 640349907326128720629

• Cardinal: 640349907326128720629 can be written as Six hundred forty quintillion, three hundred forty-nine quadrillion, nine hundred seven trillion, three hundred twenty-six billion, one hundred twenty-eight million, seven hundred twenty thousand, six hundred twenty-nine.

Scientific notation

• Scientific notation: 6.40349907326128720629 × 10²⁰

Factors of 640349907326128720629

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 957704

Divisors of 640349907326128720629

• Number of divisors d(n): 21
• Complete list of divisors:
  1 3 9 27 81 243 729 957701 2873103 8619309 25857927 77573781 232721343 698164029 917191205401 2751573616203 8254720848609 24764162545827 74292487637481 222877462912443 668632388737329
• Sum of all divisors σ(n): 640350241184774254879
• Sum of proper divisors (its aliquot sum) s(n): 333858645534250
• 640349907326128720629 is a deficient number, because the sum of its proper divisors (333858645534250) is less than itself. Its deficiency is 640349573467483186379

Bases of 640349907326128720629

• Binary: 1000101011011010100011110111111111111001110000001101011000101011110101₂
• Hexadecimal: 0x22B6A3DFFE70358AF5
• Base-36: 3R52TLH13B1YB9

Squares and roots of 640349907326128720629

• 640349907326128720629 squared (640349907326128720629²) is 410048003812581640955978205425108330155641
• 640349907326128720629 cubed (640349907326128720629³) is 262574201240650730095940599796581615324587936662776739777418189
• The square root of 640349907326128720629 is 25305135987.1099827415
• 640349907326128720629 is a perfect cube number. Its cube root is 8619309

Scales and comparisons

• 640,349,907,326,128,720,629 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 640,349,907,326,128,720,629 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 640349907326128720629 cubic inches would be around 718275.8 feet tall.

Recreational maths with 640349907326128720629

• 640349907326128720629 backwards is 926027821623709943046
• The number of decimal digits it has is: 21
• The sum of 640349907326128720629's digits is 90
• More coming soon!