81967723470239040

Names of 81967723470239040

• Cardinal: 81967723470239040 can be written as Eighty-one quadrillion, nine hundred sixty-seven trillion, seven hundred twenty-three billion, four hundred seventy million, two hundred thirty-nine thousand and forty.

Scientific notation

• Scientific notation: 8.196772347023904 × 10¹⁶

Factors of 81967723470239040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 4065859299136

Divisors of 81967723470239040

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 112 120 126 140 144 160 168 180 192 210 224 240 252 280 288 315 320 336 360 420 448 480 504 560 576 630 672 720 840 960 1008 1120 1260 1344 1440 1680 2016 2240 2520 2880 3360 4032 5040 6720 10080 20160 4065859299119 8131718598238 12197577897357 16263437196476 20329296495595 24395155794714 28461015093833 32526874392952 36592733692071 40658592991190 48790311589428 56922030187666 60987889486785 65053748785904 73185467384142 81317185982380 85383045281499 97580623178856 113844060375332 121975778973570 130107497571808 142305075469165 146370934768284 162634371964760 170766090562998 182963668460355 195161246357712 227688120750664 243951557947140 256149135844497 260214995143616 284610150938330 292741869536568 325268743929520 341532181125996 365927336920710 390322492715424 426915226407495 455376241501328 487903115894280 512298271688994 569220301876660 585483739073136 650537487859040 683064362251992 731854673841420 780644985430848 853830452814990 910752483002656 975806231788560 1024596543377988 1138440603753320 1170967478146272 1280745679222485 1301074975718080 1366128724503984 1463709347682840 1707660905629980 1821504966005312 1951612463577120 2049193086755976 2276881207506640 2341934956292544 2561491358444970 2732257449007968 2927418695365680 3415321811259960 3903224927154240 4098386173511952 4553762415013280 5122982716889940 5464514898015936 5854837390731360 6830643622519920 8196772347023904 9107524830026560 10245965433779880 11709674781462720 13661287245039840 16393544694047808 20491930867559760 27322574490079680 40983861735119520 81967723470239040
• Sum of all divisors σ(n): 322211217736661760
• Sum of proper divisors (its aliquot sum) s(n): 240243494266422720
• 81967723470239040 is an abundant number, because the sum of its proper divisors (240243494266422720) is greater than itself. Its abundance is 158275770796183680

Bases of 81967723470239040

• Binary: 100100011001101010011010111010000011111011011010101000000₂
• Hexadecimal: 0x1233535D07DB540
• Base-36: MF34SBM9XS0

Squares and roots of 81967723470239040

• 81967723470239040 squared (81967723470239040²) is 6718707690893575970136594740121600
• 81967723470239040 cubed (81967723470239040³) is 550717174084532912206024576185645274580630667264000
• The square root of 81967723470239040 is 286300058.4530835195
• The cube root of 81967723470239040 is 434391.1391507451

Scales and comparisons

• 81,967,723,470,239,040 seconds is equal to 2,606,320,063 years, 27 weeks, 6 days, 18 hours, 24 minutes.
• To count from 1 to 81,967,723,470,239,040 would take you about seven billion, eight hundred eighteen million, nine hundred sixty thousand, one hundred ninety 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 81967723470239040 cubic inches would be around 36199.3 feet tall.

Recreational maths with 81967723470239040

• 81967723470239040 backwards is 04093207432776918
• 81967723470239040 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81967723470239040's digits is 72
• More coming soon!