81102434364721

Names of 81102434364721

• Cardinal: 81102434364721 can be written as Eighty-one trillion, one hundred two billion, four hundred thirty-four million, three hundred sixty-four thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 8.1102434364721 × 10¹³

Factors of 81102434364721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 193

Divisors of 81102434364721

• Number of divisors d(n): 243
• Complete list of divisors:
  1 7 11 29 37 49 77 109 121 203 259 319 407 539 763 841 847 1073 1199 1369 1421 1813 2233 2849 3161 3509 4033 4477 5341 5887 5929 7511 8393 9251 9583 11803 11881 13189 15059 15631 19943 22127 24563 28231 31117 31339 34771 39701 41209 44363 52577 58751 64757 67081 82621 83167 91669 92323 101761 105413 116957 129833 130691 149221 154889 165649 171941 197617 217819 219373 243397 277907 310541 342287 344549 382481 436711 439597 453299 487993 578347 582169 641683 646261 712327 737891 818699 908831 914837 1008359 1044547 1151329 1159543 1286527 1437601 1524733 1641431 1703779 1945349 2173787 2396009 2411843 2677367 3056977 3077179 3391753 3415951 3765157 3790039 4327409 4491781 4803821 4835567 4986289 5730893 6361817 6403859 7058513 7311829 8059303 8116801 9005689 9991921 10063207 11091949 11490017 12664619 12748313 14151797 16265089 16772063 16882901 18055741 18741569 21398839 21540253 23742271 23911657 26356099 26530273 30291863 33626747 33848969 37309283 41690429 47601499 49409591 53191237 56415121 63039823 69943447 70442449 77643643 80430119 88652333 89238191 99062579 109911131 113855623 125494861 126390187 139310809 140231443 166195897 178915979 184492693 185711911 212043041 235387229 236942783 261164981 291833003 333210493 369701077 372338659 410402113 471687581 489604129 523616489 543505501 620566331 624667337 693438053 769377917 796989361 878464027 884731309 975175663 981620101 1209022441 1252411853 1380443471 1542545873 1828154867 1968075769 2042831021 2332473451 2587907539 2606370613 2872814791 3301813067 3665315423 4066711847 5188563391 5385645419 6149248189 6826229641 6871340707 8463157087 8766882971 9663104297 10797821111 13678939849 13776530383 15184878181 18115352773 20109703537 23112691469 25657207961 28466982929 36319943737 44733830317 57074197301 59242099609 67641730079 75584747777 95752578943 96435712681 106294147267 150468338339 199268880503 254239606159 313136812219 399519381107 670268052601 744059030869 1053278368373 1655151721729 2191957685533 2796635667749 7372948578611 11586062052103 81102434364721
• Sum of all divisors σ(n): 111402298649187
• Sum of proper divisors (its aliquot sum) s(n): 30299864284466
• 81102434364721 is a deficient number, because the sum of its proper divisors (30299864284466) is less than itself. Its deficiency is 50802570080255

Bases of 81102434364721

• Binary: 10010011100001100100001110010100110110100110001₂
• Hexadecimal: 0x49C321CA6D31
• Base-36: SQXXZF1O1

Squares and roots of 81102434364721

• 81102434364721 squared (81102434364721²) is 6577604859883877794849407841
• 81102434364721 cubed (81102434364721³) is 533459766425802068622547432579055871177361
• 81102434364721 is a perfect square number. Its square root is 9005689
• The cube root of 81102434364721 is 43285.7184284239

Scales and comparisons

• 81,102,434,364,721 seconds is equal to 2,578,806 years, 28 weeks, 2 days, 22 hours, 12 minutes, 1 second.
• To count from 1 to 81,102,434,364,721 would take you about six million, four hundred forty-seven thousand and sixteen 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 81102434364721 cubic inches would be around 3607.1 feet tall.

Recreational maths with 81102434364721

• 81102434364721 backwards is 12746343420118
• The number of decimal digits it has is: 14
• The sum of 81102434364721's digits is 46
• More coming soon!