81123737105040

Names of 81123737105040

• Cardinal: 81123737105040 can be written as Eighty-one trillion, one hundred twenty-three billion, seven hundred thirty-seven million, one hundred five thousand and forty.

Scientific notation

• Scientific notation: 8.112373710504 × 10¹³

Factors of 81123737105040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5110143

Divisors of 81123737105040

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 9467 18934 28401 37868 47335 56802 66269 75736 94670 113604 132538 142005 151472 189340 198807 227208 265076 284010 331345 378680 397614 454416 530152 568020 662690 757360 795228 994035 1060304 1136040 1325380 1590456 1988070 2272080 2650760 3180912 3976140 5100659 5301520 7952280 10201318 15301977 15904560 20402636 25503295 30603954 35704613 40805272 51006590 61207908 71409226 76509885 81610544 102013180 107113839 122415816 142818452 153019770 178523065 204026360 214227678 244831632 285636904 306039540 357046130 408052720 428455356 535569195 571273808 612079080 714092260 856910712 1071138390 1224158160 1428184520 1713821424 2142276780 2856369040 4284553560 8569107120 48287938753 96575877506 144863816259 193151755012 241439693765 289727632518 338015571271 386303510024 482879387530 579455265036 676031142542 724319081295 772607020048 965758775060 1014046713813 1158910530072 1352062285084 1448638162590 1690077856355 1931517550120 2028093427626 2317821060144 2704124570168 2897276325180 3380155712710 3863035100240 4056186855252 5070233569065 5408249140336 5794552650360 6760311425420 8112373710504 10140467138130 11589105300720 13520622850840 16224747421008 20280934276260 27041245701680 40561868552520 81123737105040
• Sum of all divisors σ(n): 287440226933760
• Sum of proper divisors (its aliquot sum) s(n): 206316489828720
• 81123737105040 is an abundant number, because the sum of its proper divisors (206316489828720) is greater than itself. Its abundance is 125192752723680

Bases of 81123737105040

• Binary: 10010011100100000010111100010000111001010010000₂
• Hexadecimal: 0x49C817887290
• Base-36: SR7QAIPAO

Squares and roots of 81123737105040

• 81123737105040 squared (81123737105040²) is 6581060721887643679993401600
• 81123737105040 cubed (81123737105040³) is 533880239874717967672574965280286104064000
• The square root of 81123737105040 is 9006871.6602958211
• The cube root of 81123737105040 is 43289.5079722827

Scales and comparisons

• 81,123,737,105,040 seconds is equal to 2,579,483 years, 47 weeks, 1 day, 10 hours, 4 minutes.
• To count from 1 to 81,123,737,105,040 would take you about six million, four hundred forty-eight thousand, seven hundred nine 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 81123737105040 cubic inches would be around 3607.5 feet tall.

Recreational maths with 81123737105040

• 81123737105040 backwards is 04050173732118
• 81123737105040 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81123737105040's digits is 42
• More coming soon!