12991538997164

Names of 12991538997164

• Cardinal: 12991538997164 can be written as Twelve trillion, nine hundred ninety-one billion, five hundred thirty-eight million, nine hundred ninety-seven thousand, one hundred sixty-four.

Scientific notation

• Scientific notation: 1.2991538997164 × 10¹³

Factors of 12991538997164

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 44782552

Divisors of 12991538997164

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 7 13 14 26 28 52 91 182 364 797 1594 3188 5579 10361 11158 20722 22316 41444 72527 145054 290108 44781733 89563466 179126932 313472131 582162529 626944262 1164325058 1253888524 2328650116 4075137703 8150275406 16300550812 35691041201 71382082402 142764164804 249837288407 463983535613 499674576814 927967071226 999349153628 1855934142452 3247884749291 6495769498582 12991538997164
• Sum of all divisors σ(n): 28016885805888
• Sum of proper divisors (its aliquot sum) s(n): 15025346808724
• 12991538997164 is an abundant number, because the sum of its proper divisors (15025346808724) is greater than itself. Its abundance is 2033807811560

Bases of 12991538997164

• Binary: 10111101000011010100000100010010011110101100₂
• Hexadecimal: 0xBD0D41127AC
• Base-36: 4LS8AVXYK

Squares and roots of 12991538997164

• 12991538997164 squared (12991538997164²) is 168780085514832990800042896
• 12991538997164 cubed (12991538997164³) is 2192713062910627555945332123148022346944
• The square root of 12991538997164 is 3604377.7545040973
• The cube root of 12991538997164 is 23508.2445779403

Scales and comparisons

• 12,991,538,997,164 seconds is equal to 413,090 years, 39 weeks, 1 day, 16 hours, 32 minutes, 44 seconds.
• To count from 1 to 12,991,538,997,164 would take you about one million, thirty-two thousand, seven hundred twenty-six 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 12991538997164 cubic inches would be around 1959 feet tall.

Recreational maths with 12991538997164

• 12991538997164 backwards is 46179983519921
• The number of decimal digits it has is: 14
• The sum of 12991538997164's digits is 74
• More coming soon!