81394729814412

Names of 81394729814412

• Cardinal: 81394729814412 can be written as Eighty-one trillion, three hundred ninety-four billion, seven hundred twenty-nine million, eight hundred fourteen thousand, four hundred twelve.

Scientific notation

• Scientific notation: 8.1394729814412 × 10¹³

Factors of 81394729814412

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2543

Divisors of 81394729814412

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 49 54 63 84 98 108 126 147 189 196 252 294 343 378 441 588 686 756 882 1029 1323 1372 1764 2058 2401 2531 2646 3087 4116 4802 5062 5292 6174 7203 7593 9261 9604 10124 12348 14406 15186 16807 17717 18522 21609 22779 28812 30372 33614 35434 37044 43218 45558 50421 53151 64827 67228 68337 70868 86436 91116 100842 106302 117649 124019 129654 136674 151263 159453 201684 212604 235298 248038 259308 273348 302526 318906 352947 372057 453789 470596 478359 496076 605052 637812 705894 744114 868133 907578 956718 1058841 1116171 1411788 1488228 1736266 1815156 1913436 2117682 2232342 2604399 3176523 3348513 3472532 4235364 4464684 5208798 6076931 6353046 6405961 6697026 7813197 10417596 12153862 12706092 12811922 13394052 15626394 18230793 19217883 23439591 24307724 25623844 31252788 36461586 38435766 42538517 44841727 46879182 54692379 57653649 72923172 76871532 85077034 89683454 93758364 109384758 115307298 127615551 134525181 164077137 170154068 172960947 179366908 218769516 230614596 255231102 269050362 297769619 313892089 328154274 345921894 382846653 403575543 510462204 538100724 595539238 627784178 656308548 691843788 765693306 807151086 893308857 941676267 1148539959 1191078476 1210726629 1255568356 1531386612 1614302172 1786617714 1883352534 2197244623 2297079918 2421453258 2679926571 2825028801 3573235428 3766705068 4394489246 4594159836 4842906516 5359853142 5650057602 6591733869 8039779713 8475086403 8788978492 10719706284 11300115204 13183467738 15380712361 16079559426 16950172806 19775201607 26366935476 30761424722 32159118852 33900345612 39550403214 46142137083 59325604821 61522849444 79100806428 92284274166 107664986527 118651209642 138426411249 184568548332 215329973054 237302419284 276852822498 322994959581 415279233747 430659946108 553705644996 645989919162 753654905689 830558467494 968984878743 1291979838324 1507309811378 1661116934988 1937969757486 2260964717067 2906954636229 3014619622756 3875939514972 4521929434134 5813909272458 6782894151201 9043858868268 11627818544916 13565788302402 20348682453603 27131576604804 40697364907206 81394729814412
• Sum of all divisors σ(n): 246290946636280
• Sum of proper divisors (its aliquot sum) s(n): 164896216821868
• 81394729814412 is an abundant number, because the sum of its proper divisors (164896216821868) is greater than itself. Its abundance is 83501487007456

Bases of 81394729814412

• Binary: 10010100000011100101111111101010000100110001100₂
• Hexadecimal: 0x4A072FF5098C
• Base-36: SUO80KY30

Squares and roots of 81394729814412

• 81394729814412 squared (81394729814412²) is 6625102041561129731962905744
• 81394729814412 cubed (81394729814412³) is 539248390665777495338846138352797368782528
• The square root of 81394729814412 is 9021902.7823631529
• The cube root of 81394729814412 is 43337.6570635683

Scales and comparisons

• 81,394,729,814,412 seconds is equal to 2,588,100 years, 33 weeks, 1 day, 2 hours, 40 minutes, 12 seconds.
• To count from 1 to 81,394,729,814,412 would take you about six million, four hundred seventy thousand, two hundred fifty-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 81394729814412 cubic inches would be around 3611.5 feet tall.

Recreational maths with 81394729814412

• 81394729814412 backwards is 21441892749318
• 81394729814412 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81394729814412's digits is 63
• More coming soon!