81635143842

Names of 81635143842

• Cardinal: 81635143842 can be written as Eighty-one billion, six hundred thirty-five million, one hundred forty-three thousand, eight hundred forty-two.

Scientific notation

• Scientific notation: 8.1635143842 × 10¹⁰

Factors of 81635143842

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2487

Divisors of 81635143842

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 7 9 14 18 19 21 27 38 42 54 57 63 81 114 126 133 162 171 189 243 266 342 378 399 486 513 567 733 798 1026 1134 1197 1466 1539 1701 1723 2199 2394 3078 3402 3446 3591 4398 4617 5131 5169 6597 7182 9234 10262 10338 10773 12061 13194 13927 15393 15507 19791 21546 24122 27854 30786 31014 32319 32737 36183 39582 41781 46179 46521 59373 64638 65474 72366 83562 92358 93042 97489 98211 108549 118746 125343 138537 139563 178119 194978 196422 217098 229159 250686 277074 279126 292467 294633 325647 356238 376029 415611 418689 458318 584934 589266 651294 687477 752058 831222 837378 877401 883899 976941 1128087 1246833 1262959 1374954 1754802 1767798 1953882 2062431 2256174 2493666 2525918 2632203 2651697 2930823 3384261 3788877 4124862 5264406 5303394 5861646 6187293 6768522 7577754 7896609 7955091 8840713 11366631 12374586 15793218 15910182 17681426 18561879 22733262 23689827 23996221 26522139 34099893 37123758 47379654 47992442 53044278 55685637 68199786 71988663 79566417 102299679 111371274 143977326 159132834 167973547 204599358 215965989 238699251 306899037 335947094 431931978 477398502 503920641 613798074 647897967 716097753 1007841282 1295795934 1432195506 1511761923 1943693901 2148293259 3023523846 3887387802 4296586518 4535285769 5831081703 9070571538 11662163406 13605857307 27211714614 40817571921 81635143842
• Sum of all divisors σ(n): 221093483520
• Sum of proper divisors (its aliquot sum) s(n): 139458339678
• 81635143842 is an abundant number, because the sum of its proper divisors (139458339678) is greater than itself. Its abundance is 57823195836

Bases of 81635143842

• Binary: 1001100000001110101010111000010100010₂
• Hexadecimal: 0x1301D570A2
• Base-36: 11I3GG4I

Squares and roots of 81635143842

• 81635143842 squared (81635143842²) is 6664296710104030520964
• 81635143842 cubed (81635143842³) is 544040820535109906362854336503688
• The square root of 81635143842 is 285718.6445473937
• The cube root of 81635143842 is 4338.0283653729

Scales and comparisons

• 81,635,143,842 seconds is equal to 2,595 years, 38 weeks, 5 days, 4 hours, 50 minutes, 42 seconds.
• To count from 1 to 81,635,143,842 would take you about five thousand, one hundred ninety-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 81635143842 cubic inches would be around 361.5 feet tall.

Recreational maths with 81635143842

• 81635143842 backwards is 24834153618
• The number of decimal digits it has is: 11
• The sum of 81635143842's digits is 45
• More coming soon!