165381131872

Names of 165381131872

• Cardinal: 165381131872 can be written as One hundred sixty-five billion, three hundred eighty-one million, one hundred thirty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.65381131872 × 10¹¹

Factors of 165381131872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 759651

Divisors of 165381131872

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 88 176 352 619 1238 2476 4952 6809 9904 13618 19808 27236 54472 108944 217888 759019 1518038 3036076 6072152 8349209 12144304 16698418 24288608 33396836 66793672 133587344 267174688 469832761 939665522 1879331044 3758662088 5168160371 7517324176 10336320742 15034648352 20672641484 41345282968 82690565936 165381131872
• Sum of all divisors σ(n): 355767854400
• Sum of proper divisors (its aliquot sum) s(n): 190386722528
• 165381131872 is an abundant number, because the sum of its proper divisors (190386722528) is greater than itself. Its abundance is 25005590656

Bases of 165381131872

• Binary: 10011010000001011110111100111001100000₂
• Hexadecimal: 0x26817BCE60
• Base-36: 23Z3NM1S

Squares and roots of 165381131872

• 165381131872 squared (165381131872²) is 27350918779263854224384
• 165381131872 cubed (165381131872³) is 4523325905453796734565834581966848
• The square root of 165381131872 is 406670.7905320961
• The cube root of 165381131872 is 5489.0264051461

Scales and comparisons

• 165,381,131,872 seconds is equal to 5,258 years, 31 weeks, 4 days, 11 hours, 17 minutes, 52 seconds.
• To count from 1 to 165,381,131,872 would take you about ten thousand, five hundred seventeen 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 165381131872 cubic inches would be around 457.4 feet tall.

Recreational maths with 165381131872

• 165381131872 backwards is 278131183561
• The number of decimal digits it has is: 12
• The sum of 165381131872's digits is 46
• More coming soon!