78991440331131

Names of 78991440331131

• Cardinal: 78991440331131 can be written as Seventy-eight trillion, nine hundred ninety-one billion, four hundred forty million, three hundred thirty-one thousand, one hundred thirty-one.

Scientific notation

• Scientific notation: 7.8991440331131 × 10¹³

Factors of 78991440331131

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 148139856

Divisors of 78991440331131

• Number of divisors d(n): 40
• Complete list of divisors:
  1 3 9 27 29 81 87 227 261 681 783 2043 2349 6129 6583 18387 19749 59247 177741 533223 148139597 444418791 1333256373 3999769119 4296048313 11999307357 12888144939 33627688519 38664434817 100883065557 115993304451 302649196671 347979913353 907947590013 975202967051 2723842770039 2925608901153 8776826703459 26330480110377 78991440331131
• Sum of all divisors σ(n): 122606256888720
• Sum of proper divisors (its aliquot sum) s(n): 43614816557589
• 78991440331131 is a deficient number, because the sum of its proper divisors (43614816557589) is less than itself. Its deficiency is 35376623773542

Bases of 78991440331131

• Binary: 10001111101011110100000101111011100000101111011₂
• Hexadecimal: 0x47D7A0BDC17B
• Base-36: S00602OOR

Squares and roots of 78991440331131

• 78991440331131 squared (78991440331131²) is 6239647645586629146927739161
• 78991440331131 cubed (78991440331131³) is 492878754683638245592539788323111036121091
• The square root of 78991440331131 is 8887712.8852776855
• The cube root of 78991440331131 is 42906.8545023377

Scales and comparisons

• 78,991,440,331,131 seconds is equal to 2,511,683 years, 24 weeks, 1 day, 14 hours, 38 minutes, 51 seconds.
• To count from 1 to 78,991,440,331,131 would take you about six million, two hundred seventy-nine thousand, two hundred 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 78991440331131 cubic inches would be around 3575.6 feet tall.

Recreational maths with 78991440331131

• 78991440331131 backwards is 13113304419987
• The number of decimal digits it has is: 14
• The sum of 78991440331131's digits is 54
• More coming soon!