664616844138

Names of 664616844138

• Cardinal: 664616844138 can be written as Six hundred sixty-four billion, six hundred sixteen million, eight hundred forty-four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 6.64616844138 × 10¹¹

Factors of 664616844138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 448459446

Divisors of 664616844138

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 13 19 26 38 39 57 78 114 247 494 741 1482 448459409 896918818 1345378227 2690756454 5829972317 8520728771 11659944634 17041457542 17489916951 25562186313 34979833902 51124372626 110769474023 221538948046 332308422069 664616844138
• Sum of all divisors σ(n): 1506823617600
• Sum of proper divisors (its aliquot sum) s(n): 842206773462
• 664616844138 is an abundant number, because the sum of its proper divisors (842206773462) is greater than itself. Its abundance is 177589929324

Bases of 664616844138

• Binary: 1001101010111110010000000011101101101010₂
• Hexadecimal: 0x9ABE403B6A
• Base-36: 8HBJPIZU

Squares and roots of 664616844138

• 664616844138 squared (664616844138²) is 441715549511954584963044
• 664616844138 cubed (664616844138³) is 293571594523317742362117892638036072
• The square root of 664616844138 is 815240.3597332507
• The cube root of 664616844138 is 8726.8420306039

Scales and comparisons

• 664,616,844,138 seconds is equal to 21,132 years, 39 weeks, 3 days, 14 hours, 2 minutes, 18 seconds.
• To count from 1 to 664,616,844,138 would take you about forty-two thousand, two hundred sixty-five 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 664616844138 cubic inches would be around 727.2 feet tall.

Recreational maths with 664616844138

• 664616844138 backwards is 831448616466
• 664616844138 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 664616844138's digits is 57
• More coming soon!