64129472820

Names of 64129472820

• Cardinal: 64129472820 can be written as Sixty-four billion, one hundred twenty-nine million, four hundred seventy-two thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 6.412947282 × 10¹⁰

Factors of 64129472820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 16965486

Divisors of 64129472820

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 54 60 63 70 84 90 105 108 126 135 140 180 189 210 252 270 315 378 420 540 630 756 945 1260 1890 3780 16965469 33930938 50896407 67861876 84827345 101792814 118758283 152689221 169654690 203585628 237516566 254482035 305378442 339309380 356274849 458067663 475033132 508964070 593791415 610756884 712549698 763446105 916135326 1017928140 1068824547 1187582830 1425099396 1526892210 1781374245 1832270652 2137649094 2290338315 2375165660 3053784420 3206473641 3562748490 4275298188 4580676630 5344122735 6412947282 7125496980 9161353260 10688245470 12825894564 16032368205 21376490940 32064736410 64129472820
• Sum of all divisors σ(n): 228015916800
• Sum of proper divisors (its aliquot sum) s(n): 163886443980
• 64129472820 is an abundant number, because the sum of its proper divisors (163886443980) is greater than itself. Its abundance is 99756971160

Bases of 64129472820

• Binary: 111011101110011010100001100100110100₂
• Hexadecimal: 0xEEE6A1934
• Base-36: TGL15X0

Squares and roots of 64129472820

• 64129472820 squared (64129472820²) is 4112589284171118752400
• 64129472820 cubed (64129472820³) is 263738182719075016261028109768000
• The square root of 64129472820 is 253237.9766543713
• The cube root of 64129472820 is 4002.6955335333

Scales and comparisons

• 64,129,472,820 seconds is equal to 2,039 years, 6 weeks, 1 day, 6 hours, 27 minutes.
• To count from 1 to 64,129,472,820 would take you about four thousand and seventy-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 64129472820 cubic inches would be around 333.6 feet tall.

Recreational maths with 64129472820

• 64129472820 backwards is 02827492146
• 64129472820 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 64129472820's digits is 45
• More coming soon!