81532002816

Names of 81532002816

• Cardinal: 81532002816 can be written as Eighty-one billion, five hundred thirty-two million, two thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 8.1532002816 × 10¹⁰

Factors of 81532002816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 900

Divisors of 81532002816

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 81 88 96 99 108 128 132 144 162 176 192 198 216 256 264 288 297 313 324 352 384 396 432 512 528 571 576 594 626 648 704 768 792 864 891 939 1056 1142 1152 1188 1252 1296 1408 1536 1584 1713 1728 1782 1878 2112 2284 2304 2376 2504 2592 2816 2817 3168 3426 3443 3456 3564 3756 4224 4568 4608 4752 5008 5139 5184 5632 5634 6281 6336 6852 6886 6912 7128 7512 8448 8451 9136 9504 10016 10278 10329 10368 11268 12562 12672 13704 13772 13824 14256 15024 15417 16896 16902 18272 18843 19008 20032 20556 20658 20736 22536 25124 25344 25353 27408 27544 28512 30048 30834 30987 33804 36544 37686 38016 40064 41112 41316 41472 45072 46251 50248 50688 50706 54816 55088 56529 57024 60096 61668 61974 67608 73088 75372 76032 80128 82224 82632 90144 92502 92961 100496 101412 109632 110176 113058 114048 120192 123336 123948 135216 146176 150744 152064 160256 164448 165264 169587 178723 180288 185004 185922 200992 202824 219264 220352 226116 228096 240384 246672 247896 270432 278883 292352 301488 328896 330528 339174 357446 360576 370008 371844 401984 405648 438528 440704 452232 456192 480768 493344 495792 508761 536169 540864 557766 602976 657792 661056 678348 714892 721152 740016 743688 803968 811296 877056 881408 904464 986688 991584 1017522 1072338 1081728 1115532 1205952 1315584 1322112 1356696 1429784 1442304 1480032 1487376 1607936 1608507 1622592 1762816 1808928 1965953 1973376 1983168 2035044 2144676 2163456 2231064 2411904 2631168 2644224 2713392 2859568 2960064 2974752 3215872 3217014 3245184 3617856 3931906 3946752 3966336 4070088 4289352 4326912 4462128 4823808 4825521 5288448 5426784 5719136 5897859 5920128 5949504 6434028 6490368 7235712 7863812 7893504 7932672 8140176 8578704 8924256 9647616 9651042 10853568 11438272 11795718 11840256 11899008 12868056 12980736 14471424 14476563 15727624 15865344 16280352 17157408 17693577 17848512 19302084 21707136 22876544 23591436 23680512 23798016 25736112 28942848 28953126 31455248 32560704 34314816 35387154 35697024 38604168 43414272 45753088 47182872 47596032 51472224 53080731 57906252 62910496 65121408 68629632 70774308 71394048 77208336 86828544 91506176 94365744 102944448 106161462 115812504 125820992 130242816 137259264 141548616 142788096 154416672 159242193 188731488 205888896 212322924 231625008 251641984 260485632 274518528 283097232 308833344 318484386 377462976 411777792 424645848 463250016 503283968 566194464 617666688 636968772 754925952 823555584 849291696 926500032 1006567936 1132388928 1235333376 1273937544 1509851904 1698583392 1853000064 2264777856 2470666752 2547875088 3019703808 3397166784 3706000128 4529555712 5095750176 6794333568 7412000256 9059111424 10191500352 13588667136 20383000704 27177334272 40766001408 81532002816
• Sum of all divisors σ(n): 266789004768
• Sum of proper divisors (its aliquot sum) s(n): 185257001952
• 81532002816 is an abundant number, because the sum of its proper divisors (185257001952) is greater than itself. Its abundance is 103724999136

Bases of 81532002816

• Binary: 1001011111011101011111010001000000000₂
• Hexadecimal: 0x12FBAFA200
• Base-36: 11GE1S00

Squares and roots of 81532002816

• 81532002816 squared (81532002816²) is 6647467483188231929856
• 81532002816 cubed (81532002816³) is 541981337558571358363080506474496
• The square root of 81532002816 is 285538.0934586487
• The cube root of 81532002816 is 4336.2006506549

Scales and comparisons

• 81,532,002,816 seconds is equal to 2,592 years, 24 weeks, 1 day, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 81,532,002,816 would take you about five thousand, one hundred eighty-four 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 81532002816 cubic inches would be around 361.4 feet tall.

Recreational maths with 81532002816

• 81532002816 backwards is 61820023518
• 81532002816 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81532002816's digits is 36
• More coming soon!