12991518884988

Names of 12991518884988

• Cardinal: 12991518884988 can be written as Twelve trillion, nine hundred ninety-one billion, five hundred eighteen million, eight hundred eighty-four thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 1.2991518884988 × 10¹³

Factors of 12991518884988

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1257406062

Divisors of 12991518884988

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 28 36 41 42 63 82 84 123 126 164 246 252 287 369 492 574 738 861 1148 1476 1722 2583 3444 5166 10332 1257406009 2514812018 3772218027 5029624036 7544436054 8801842063 11316654081 15088872108 17603684126 22633308162 26405526189 35207368252 45266616324 51553646369 52811052378 79216578567 103107292738 105622104756 154660939107 158433157134 206214585476 309321878214 316866314268 360875524583 463982817321 618643756428 721751049166 927965634642 1082626573749 1443502098332 1855931269284 2165253147498 3247879721247 4330506294996 6495759442494 12991518884988
• Sum of all divisors σ(n): 38446446161760
• Sum of proper divisors (its aliquot sum) s(n): 25454927276772
• 12991518884988 is an abundant number, because the sum of its proper divisors (25454927276772) is greater than itself. Its abundance is 12463408391784

Bases of 12991518884988

• Binary: 10111101000011010010110111100100010001111100₂
• Hexadecimal: 0xBD0D2DE447C
• Base-36: 4LS7YWVB0

Squares and roots of 12991518884988

• 12991518884988 squared (12991518884988²) is 168779562938999846771760144
• 12991518884988 cubed (12991518884988³) is 2192702879322037257592160197305058318272
• The square root of 12991518884988 is 3604374.9645379571
• The cube root of 12991518884988 is 23508.2324469115

Scales and comparisons

• 12,991,518,884,988 seconds is equal to 413,090 years, 5 weeks, 6 days, 21 hours, 49 minutes, 48 seconds.
• To count from 1 to 12,991,518,884,988 would take you about one million, thirty-two thousand, seven hundred twenty-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 12991518884988 cubic inches would be around 1959 feet tall.

Recreational maths with 12991518884988

• 12991518884988 backwards is 88948881519921
• The number of decimal digits it has is: 14
• The sum of 12991518884988's digits is 81
• More coming soon!