81823680015

Names of 81823680015

• Cardinal: 81823680015 can be written as Eighty-one billion, eight hundred twenty-three million, six hundred eighty thousand and fifteen.

Scientific notation

• Scientific notation: 8.1823680015 × 10¹⁰

Factors of 81823680015

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 562

Divisors of 81823680015

• Number of divisors d(n): 256
• Complete list of divisors:
  1 3 5 7 11 15 21 23 33 35 55 69 77 79 105 115 127 161 165 231 237 253 307 345 381 385 395 483 553 635 759 805 869 889 921 1155 1185 1265 1397 1535 1659 1771 1817 1905 2149 2415 2607 2667 2765 2921 3377 3795 4191 4345 4445 4605 5313 5451 6083 6447 6985 7061 8295 8763 8855 9085 9779 10033 10131 10745 12719 13035 13335 14605 16885 18249 19987 20447 20955 21183 23639 24253 26565 27255 29337 30099 30415 32131 32235 35305 38157 38989 43815 48895 49427 50165 50655 59961 61341 63595 70231 70917 72759 77671 91245 96393 99935 102235 105915 110363 116967 118195 121265 139909 146685 148281 150495 160655 169771 190785 194945 210693 224917 230759 233013 247135 266783 272923 299805 306705 331089 351155 354585 363795 388355 419727 428879 481965 509313 543697 551815 557819 584835 674751 692277 699545 741405 772541 800349 818769 848855 896747 1053465 1124585 1153795 1165065 1286637 1333915 1364615 1615313 1631091 1655445 1673457 1867481 2098635 2144395 2317623 2538349 2546565 2690241 2718485 2789095 3002153 3080131 3373755 3461385 3862705 3904733 4001745 4093845 4483735 4845939 5602443 6136009 6277229 6433185 7615047 8076565 8155455 8367285 9006459 9240393 9337405 9864217 11588115 11714199 12691745 13451205 15010765 15400655 17768443 18408027 18831687 19523665 21560917 24229695 28012215 29592651 30680045 31386145 33881441 38075235 42952063 45032295 46201965 49321085 53305329 58570995 64682751 69049519 70843013 88842215 92040135 94158435 101644323 107804585 128856189 147963255 169407205 207148557 212529039 214760315 237170087 266526645 323413755 345247595 354215065 495901091 508221615 644280945 711510261 779273143 1035742785 1062645195 1185850435 1487703273 2337819429 2479505455 3557551305 3896365715 5454912001 7438516365 11689097145 16364736003 27274560005 81823680015
• Sum of all divisors σ(n): 174399160320
• Sum of proper divisors (its aliquot sum) s(n): 92575480305
• 81823680015 is an abundant number, because the sum of its proper divisors (92575480305) is greater than itself. Its abundance is 10751800290

Bases of 81823680015

• Binary: 1001100001101000100100100011000001111₂
• Hexadecimal: 0x130D12460F
• Base-36: 11L7PFKF

Squares and roots of 81823680015

• 81823680015 squared (81823680015²) is 6695114611197110400225
• 81823680015 cubed (81823680015³) is 547818915610343497480638984003375
• The square root of 81823680015 is 286048.3875413389
• The cube root of 81823680015 is 4341.3653532089

Scales and comparisons

• 81,823,680,015 seconds is equal to 2,601 years, 38 weeks, 3 days, 8 hours, 15 seconds.
• To count from 1 to 81,823,680,015 would take you about five thousand, two hundred three 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 81823680015 cubic inches would be around 361.8 feet tall.

Recreational maths with 81823680015

• 81823680015 backwards is 51008632818
• The number of decimal digits it has is: 11
• The sum of 81823680015's digits is 42
• More coming soon!