64385729235544520

Names of 64385729235544520

• Cardinal: 64385729235544520 can be written as Sixty-four quadrillion, three hundred eighty-five trillion, seven hundred twenty-nine billion, two hundred thirty-five million, five hundred forty-four thousand, five hundred twenty.

Scientific notation

• Scientific notation: 6.438572923554452 × 10¹⁶

Factors of 64385729235544520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 34247728316833

Divisors of 64385729235544520

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 4 5 8 10 20 40 47 94 188 235 376 470 940 1880 34247728316779 68495456633558 136990913267116 171238641583895 273981826534232 342477283167790 684954566335580 1369909132671160 1609643230888613 3219286461777226 6438572923554452 8048216154443065 12877145847108904 16096432308886130 32192864617772260 64385729235544520
• Sum of all divisors σ(n): 147950186328489600
• Sum of proper divisors (its aliquot sum) s(n): 83564457092945080
• 64385729235544520 is an abundant number, because the sum of its proper divisors (83564457092945080) is greater than itself. Its abundance is 19178727857400560

Bases of 64385729235544520

• Binary: 11100100101111100111101011000111101100000110100111001000₂
• Hexadecimal: 0xE4BE7AC7B069C8
• Base-36: HLYU3OCKSLK

Squares and roots of 64385729235544520

• 64385729235544520 squared (64385729235544520²) is 4145522129192852319791380902030400
• 64385729235544520 cubed (64385729235544520³) is 266912465350168998269217574390052198867517593408000
• The square root of 64385729235544520 is 253743431.9062160869
• The cube root of 64385729235544520 is 400801.9935153937

Scales and comparisons

• 64,385,729,235,544,520 seconds is equal to 2,047,267,031 years, 28 weeks, 5 days, 11 hours, 15 minutes, 20 seconds.
• To count from 1 to 64,385,729,235,544,520 would take you about six billion, one hundred forty-one million, eight hundred one thousand and ninety-four 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 64385729235544520 cubic inches would be around 33400.2 feet tall.

Recreational maths with 64385729235544520

• 64385729235544520 backwards is 02544553292758346
• The number of decimal digits it has is: 17
• The sum of 64385729235544520's digits is 74
• More coming soon!