81313308960

Names of 81313308960

• Cardinal: 81313308960 can be written as Eighty-one billion, three hundred thirteen million, three hundred eight thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 8.131330896 × 10¹⁰

Factors of 81313308960

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 52799

Divisors of 81313308960

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 19 20 24 26 30 32 38 39 40 48 52 57 60 65 76 78 80 95 96 104 114 120 130 152 156 160 169 190 195 208 228 240 247 260 285 304 312 338 380 390 416 456 480 494 507 520 570 608 624 676 741 760 780 845 912 988 1014 1040 1140 1235 1248 1352 1482 1520 1560 1690 1824 1976 2028 2080 2280 2470 2535 2704 2964 3040 3120 3211 3380 3705 3952 4056 4560 4940 5070 5408 5928 6240 6422 6760 7410 7904 8112 9120 9633 9880 10140 11856 12844 13520 14820 16055 16224 19266 19760 20280 23712 25688 27040 29640 32110 38532 39520 40560 48165 51376 52757 59280 64220 77064 81120 96330 102752 105514 118560 128440 154128 158271 192660 211028 256880 263785 308256 316542 385320 422056 513760 527570 633084 685841 770640 791355 844112 1002383 1055140 1266168 1371682 1541280 1582710 1688224 2004766 2057523 2110280 2532336 2743364 3007149 3165420 3429205 4009532 4115046 4220560 5011915 5064672 5486728 6014298 6330840 6858410 8019064 8230092 8441120 8915933 10023830 10287615 10973456 12028596 12661680 13030979 13716820 15035745 16038128 16460184 17831866 20047660 20575230 21946912 24057192 25323360 26061958 26747799 27433640 30071490 32076256 32920368 35663732 39092937 40095320 41150460 44579665 48114384 52123916 53495598 54867280 60142980 65154895 65840736 71327464 78185874 80190640 82300920 89159330 96228768 104247832 106991196 109734560 120285960 130309790 133738995 142654928 156371748 160381280 164601840 169402727 178318660 195464685 208495664 213982392 240571920 260619580 267477990 285309856 312743496 329203680 338805454 356637320 390929370 416991328 427964784 481143840 508208181 521239160 534955980 625486992 677610908 713274640 781858740 847013635 855929568 1016416362 1042478320 1069911960 1250973984 1355221816 1426549280 1563717480 1694027270 2032832724 2084956640 2139823920 2541040905 2710443632 3127434960 3388054540 4065665448 4279647840 5082081810 5420887264 6254869920 6776109080 8131330896 10164163620 13552218160 16262661792 20328327240 27104436320 40656654480 81313308960
• Sum of all divisors σ(n): 291958551360
• Sum of proper divisors (its aliquot sum) s(n): 210645242400
• 81313308960 is an abundant number, because the sum of its proper divisors (210645242400) is greater than itself. Its abundance is 129331933440

Bases of 81313308960

• Binary: 1001011101110101001101010000100100000₂
• Hexadecimal: 0x12EEA6A120
• Base-36: 11CRUEQO

Squares and roots of 81313308960

• 81313308960 squared (81313308960²) is 6611854214024416281600
• 81313308960 cubed (81313308960³) is 537631744503445326089395163136000
• The square root of 81313308960 is 285154.8859129017
• The cube root of 81313308960 is 4332.3201720237

Scales and comparisons

• 81,313,308,960 seconds is equal to 2,585 years, 26 weeks, 4 days, 6 hours, 16 minutes.
• To count from 1 to 81,313,308,960 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 81313308960 cubic inches would be around 361 feet tall.

Recreational maths with 81313308960

• 81313308960 backwards is 06980331318
• The number of decimal digits it has is: 11
• The sum of 81313308960's digits is 42
• More coming soon!