81396124560

Names of 81396124560

• Cardinal: 81396124560 can be written as Eighty-one billion, three hundred ninety-six million, one hundred twenty-four thousand, five hundred sixty.

Scientific notation

• Scientific notation: 8.139612456 × 10¹⁰

Factors of 81396124560

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 12650

Divisors of 81396124560

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 90 108 120 135 144 180 216 240 270 360 432 540 720 1080 2160 4817 7823 9634 14451 15646 19268 23469 24085 28902 31292 38536 39115 43353 46938 48170 57804 62584 70407 72255 77072 78230 86706 93876 96340 115608 117345 125168 130059 140814 144510 156460 173412 187752 192680 211221 216765 231216 234690 260118 281628 289020 312920 346824 352035 375504 385360 422442 433530 469380 520236 563256 578040 625840 650295 693648 704070 844884 867060 938760 1040472 1056105 1126512 1156080 1300590 1408140 1689768 1734120 1877520 2080944 2112210 2601180 2816280 3379536 3468240 4224420 5202360 5632560 8448840 10404720 16897680 37683391 75366782 113050173 150733564 188416955 226100346 301467128 339150519 376833910 452200692 565250865 602934256 678301038 753667820 904401384 1017451557 1130501730 1356602076 1507335640 1695752595 1808802768 2034903114 2261003460 2713204152 3014671280 3391505190 4069806228 4522006920 5087257785 5426408304 6783010380 8139612456 9044013840 10174515570 13566020760 16279224912 20349031140 27132041520 40698062280 81396124560
• Sum of all divisors σ(n): 280458478080
• Sum of proper divisors (its aliquot sum) s(n): 199062353520
• 81396124560 is an abundant number, because the sum of its proper divisors (199062353520) is greater than itself. Its abundance is 117666228960

Bases of 81396124560

• Binary: 1001011110011100101100100101110010000₂
• Hexadecimal: 0x12F3964B90
• Base-36: 11E55FO0

Squares and roots of 81396124560

• 81396124560 squared (81396124560²) is 6625329093387035193600
• 81396124560 cubed (81396124560³) is 539276112136322988907369314816000
• The square root of 81396124560 is 285300.0605678171
• The cube root of 81396124560 is 4333.7904600729

Scales and comparisons

• 81,396,124,560 seconds is equal to 2,588 years, 7 weeks, 3 days, 18 hours, 36 minutes.
• To count from 1 to 81,396,124,560 would take you about five thousand, one hundred seventy-six 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 81396124560 cubic inches would be around 361.1 feet tall.

Recreational maths with 81396124560

• 81396124560 backwards is 06542169318
• 81396124560 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81396124560's digits is 45
• More coming soon!