81101508327920

Names of 81101508327920

• Cardinal: 81101508327920 can be written as Eighty-one trillion, one hundred one billion, five hundred eight million, three hundred twenty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 8.110150832792 × 10¹³

Factors of 81101508327920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 56248

Divisors of 81101508327920

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 2731 5462 8191 10924 13655 16382 21848 27310 32764 40955 43696 45319 54620 65528 81910 90638 109240 131056 163820 181276 218480 226595 327640 362552 453190 655280 725104 906380 1812760 3625520 22369621 44739242 89478484 111848105 123766189 178956968 223696210 247532378 357913936 371207929 447392420 495064756 618830945 742415858 894784840 990129512 1237661890 1484831716 1789569680 1856039645 1980259024 2475323780 2969663432 3712079290 4950647560 5939326864 7424158580 9901295120 14848317160 29696634320 1013768854099 2027537708198 4055075416396 5068844270495 8110150832792 10137688540990 16220301665584 20275377081980 40550754163960 81101508327920
• Sum of all divisors σ(n): 188657243258880
• Sum of proper divisors (its aliquot sum) s(n): 107555734930960
• 81101508327920 is an abundant number, because the sum of its proper divisors (107555734930960) is greater than itself. Its abundance is 26454226603040

Bases of 81101508327920

• Binary: 10010011100001011101010100110000011100111110000₂
• Hexadecimal: 0x49C2EA9839F0
• Base-36: SQXIO2V3K

Squares and roots of 81101508327920

• 81101508327920 squared (81101508327920²) is 6577454653063677114251526400
• 81101508327920 cubed (81101508327920³) is 533441493321959963823528081647171737088000
• The square root of 81101508327920 is 9005637.5858636461
• The cube root of 81101508327920 is 43285.5536807149

Scales and comparisons

• 81,101,508,327,920 seconds is equal to 2,578,777 years, 5 weeks, 1 day, 21 hours, 45 minutes, 20 seconds.
• To count from 1 to 81,101,508,327,920 would take you about six million, four hundred forty-six thousand, nine hundred forty-two 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 81101508327920 cubic inches would be around 3607.1 feet tall.

Recreational maths with 81101508327920

• 81101508327920 backwards is 02972380510118
• The number of decimal digits it has is: 14
• The sum of 81101508327920's digits is 47
• More coming soon!