64397478464

Names of 64397478464

• Cardinal: 64397478464 can be written as Sixty-four billion, three hundred ninety-seven million, four hundred seventy-eight thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 6.4397478464 × 10¹⁰

Factors of 64397478464

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3977153

Divisors of 64397478464

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 8 11 16 22 23 32 44 46 64 88 92 176 184 253 352 368 506 704 736 1012 1472 2024 4048 8096 16192 3977117 7954234 15908468 31816936 43748287 63633872 87496574 91473691 127267744 174993148 182947382 254535488 349986296 365894764 699972592 731789528 1006210601 1399945184 1463579056 2012421202 2799890368 2927158112 4024842404 5854316224 8049684808 16099369616 32198739232 64397478464
• Sum of all divisors σ(n): 145467067968
• Sum of proper divisors (its aliquot sum) s(n): 81069589504
• 64397478464 is an abundant number, because the sum of its proper divisors (81069589504) is greater than itself. Its abundance is 16672111040

Bases of 64397478464

• Binary: 111011111110011000111000101001000000₂
• Hexadecimal: 0xEFE638A40
• Base-36: TL0LGE8

Squares and roots of 64397478464

• 64397478464 squared (64397478464²) is 4147035232521343799296
• 64397478464 cubed (64397478464³) is 267058612075742469735504098361344
• The square root of 64397478464 is 253766.5826384555
• The cube root of 64397478464 is 4008.2637173207

Scales and comparisons

• 64,397,478,464 seconds is equal to 2,047 years, 33 weeks, 2 days, 4 hours, 27 minutes, 44 seconds.
• To count from 1 to 64,397,478,464 would take you about four thousand and ninety-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 64397478464 cubic inches would be around 334 feet tall.

Recreational maths with 64397478464

• 64397478464 backwards is 46487479346
• The number of decimal digits it has is: 11
• The sum of 64397478464's digits is 62
• More coming soon!