649721131934426931

Names of 649721131934426931

• Cardinal: 649721131934426931 can be written as Six hundred forty-nine quadrillion, seven hundred twenty-one trillion, one hundred thirty-one billion, nine hundred thirty-four million, four hundred twenty-six thousand, nine hundred thirty-one.

Scientific notation

• Scientific notation: 6.49721131934426931 × 10¹⁷

Factors of 649721131934426931

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 3544326

Divisors of 649721131934426931

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 157321 471963 472309 1416927 2914693 8744079 74304124189 222912372567 458542417453 1375627252359 1376635736137 4129907208411 216573710644808977 649721131934426931
• Sum of all divisors σ(n): 866302480522524320
• Sum of proper divisors (its aliquot sum) s(n): 216581348588097389
• 649721131934426931 is a deficient number, because the sum of its proper divisors (216581348588097389) is less than itself. Its deficiency is 433139783346329542

Bases of 649721131934426931

• Binary: 100100000100010001011110110101011000000001000010011100110011₂
• Hexadecimal: 0x90445ED58042733
• Base-36: 4XPEX3H790S3

Squares and roots of 649721131934426931

• 649721131934426931 squared (649721131934426931²) is 422137549282153006765511611378078761
• 649721131934426931 cubed (649721131934426931³) is 274271686351625384306322343122517052868881508317512491
• The square root of 649721131934426931 is 806052809.6436528959
• The cube root of 649721131934426931 is 866115.2074034139

Scales and comparisons

• 649,721,131,934,426,931 seconds is equal to 20,659,122,276 years, 5 weeks, 1 day, 7 hours, 28 minutes, 51 seconds.
• To count from 1 to 649,721,131,934,426,931 would take you about sixty-one billion, nine hundred seventy-seven million, three hundred sixty-six thousand, eight hundred twenty-eight 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 649721131934426931 cubic inches would be around 72176.3 feet tall.

Recreational maths with 649721131934426931

• 649721131934426931 backwards is 139624439131127946
• The number of decimal digits it has is: 18
• The sum of 649721131934426931's digits is 75
• More coming soon!