81314738442

Names of 81314738442

• Cardinal: 81314738442 can be written as Eighty-one billion, three hundred fourteen million, seven hundred thirty-eight thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 8.1314738442 × 10¹⁰

Factors of 81314738442

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1824

Divisors of 81314738442

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 29 42 49 58 63 87 98 126 147 174 203 261 294 406 441 522 609 882 1218 1421 1783 1827 2842 3566 3654 4263 5349 8526 10698 12481 12789 16047 24962 25578 32094 37443 51707 74886 87367 103414 112329 155121 174734 224658 262101 310242 361949 465363 524202 723898 786303 930726 1085847 1572606 2171694 2533643 3179089 3257541 5067286 6358178 6515082 7600929 9537267 15201858 19074534 22253623 22802787 28611801 44507246 45605574 57223602 66760869 92193581 133521738 155775361 184387162 200282607 276580743 311550722 400565214 467326083 553161486 645355067 829742229 934652166 1290710134 1401978249 1659484458 1936065201 2803956498 3872130402 4517485469 5808195603 9034970938 11616391206 13552456407 27104912814 40657369221 81314738442
• Sum of all divisors σ(n): 212132420370
• Sum of proper divisors (its aliquot sum) s(n): 130817681928
• 81314738442 is an abundant number, because the sum of its proper divisors (130817681928) is greater than itself. Its abundance is 49502943486

Bases of 81314738442

• Binary: 1001011101110101111000111000100001010₂
• Hexadecimal: 0x12EEBC710A
• Base-36: 11CSP1QI

Squares and roots of 81314738442

• 81314738442 squared (81314738442²) is 6612086687890872587364
• 81314738442 cubed (81314738442³) is 537660099581676393080651454246888
• The square root of 81314738442 is 285157.3924028623
• The cube root of 81314738442 is 4332.3455591651

Scales and comparisons

• 81,314,738,442 seconds is equal to 2,585 years, 28 weeks, 6 days, 19 hours, 20 minutes, 42 seconds.
• To count from 1 to 81,314,738,442 would take you about five thousand, one hundred seventy-one 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 81314738442 cubic inches would be around 361 feet tall.

Recreational maths with 81314738442

• 81314738442 backwards is 24483741318
• The number of decimal digits it has is: 11
• The sum of 81314738442's digits is 45
• More coming soon!