81736154576438013

Names of 81736154576438013

• Cardinal: 81736154576438013 can be written as Eighty-one quadrillion, seven hundred thirty-six trillion, one hundred fifty-four billion, five hundred seventy-six million, four hundred thirty-eight thousand and thirteen.

Scientific notation

• Scientific notation: 8.1736154576438013 × 10¹⁶

Factors of 81736154576438013

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5222363

Divisors of 81736154576438013

• Number of divisors d(n): 30
• Complete list of divisors:
  1 3 9 27 37 81 111 333 999 2997 5222323 15666969 47000907 141002721 193225951 423008163 579677853 1739033559 5217100677 15651302031 27272657516329 81817972548987 245453917646961 736361752940883 1009088328104173 2209085258822649 3027264984312519 9081794952937557 27245384858812671 81736154576438013
• Sum of all divisors σ(n): 125399703272326494
• Sum of proper divisors (its aliquot sum) s(n): 43663548695888481
• 81736154576438013 is a deficient number, because the sum of its proper divisors (43663548695888481) is less than itself. Its deficiency is 38072605880549532

Bases of 81736154576438013

• Binary: 100100010011000101001100101111010110101011100001011111101₂
• Hexadecimal: 0x12262997AD5C2FD
• Base-36: MCT1R1HU6T9

Squares and roots of 81736154576438013

• 81736154576438013 squared (81736154576438013²) is 6680798964943368736324786831388169
• 81736154576438013 cubed (81736154576438013³) is 546062816892718268915440302360896458895988170068197
• The square root of 81736154576438013 is 285895355.9896313059
• The cube root of 81736154576438013 is 433981.6838675137

Scales and comparisons

• 81,736,154,576,438,013 seconds is equal to 2,598,956,889 years, 1 day, 15 hours, 53 minutes, 33 seconds.
• To count from 1 to 81,736,154,576,438,013 would take you about seven billion, seven hundred ninety-six million, eight hundred seventy thousand, six hundred sixty-seven 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 81736154576438013 cubic inches would be around 36165.1 feet tall.

Recreational maths with 81736154576438013

• 81736154576438013 backwards is 31083467545163718
• The number of decimal digits it has is: 17
• The sum of 81736154576438013's digits is 72
• More coming soon!