81675840740

Names of 81675840740

• Cardinal: 81675840740 can be written as Eighty-one billion, six hundred seventy-five million, eight hundred forty thousand, seven hundred forty.

Scientific notation

• Scientific notation: 8.167584074 × 10¹⁰

Factors of 81675840740

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 453

Divisors of 81675840740

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 10 13 17 19 20 26 31 34 38 52 62 65 68 76 85 95 124 130 137 155 170 190 221 229 247 260 274 310 323 340 380 403 442 458 494 527 548 589 620 646 685 806 884 916 988 1054 1105 1145 1178 1235 1292 1370 1612 1615 1781 2015 2108 2210 2290 2329 2356 2470 2603 2635 2740 2945 2977 3230 3562 3893 4030 4199 4247 4351 4420 4580 4658 4940 5206 5270 5890 5954 6460 6851 7099 7124 7657 7786 8060 8398 8494 8702 8905 9316 10013 10412 10540 11645 11780 11908 13015 13702 14198 14885 15314 15572 16796 16988 17404 17810 19465 20026 20995 21235 21755 23290 26030 27404 28396 29770 30277 30628 31373 33839 34255 35495 35620 38285 38930 40052 41990 42470 43510 44251 46580 50065 50609 52060 55211 56563 59540 60554 62746 67678 68510 70990 72199 73967 76570 77860 80693 83980 84940 87020 88502 92287 100130 101218 110422 113126 120683 121108 125492 130169 134881 135356 137020 141980 144398 147934 151385 153140 156865 161386 169195 177004 184574 200260 202436 220844 221255 226252 241366 253045 260338 269762 276055 282815 288796 295868 302770 313730 322772 338390 360995 369148 369835 403465 407849 442510 461435 482732 506090 520676 533341 539524 552110 565630 575263 596087 603415 605540 627460 650845 674405 676780 721990 739670 806930 815698 885020 922870 938587 961571 972563 1012180 1049009 1066682 1104220 1131260 1150526 1192174 1206830 1301690 1348810 1371781 1443980 1479340 1568879 1613860 1631396 1753453 1845740 1877174 1923142 1945126 2039245 2098018 2133364 2292977 2301052 2384348 2413660 2603380 2666705 2697620 2743562 2876315 2980435 3137758 3506906 3754348 3846284 3890252 4078490 4196036 4585954 4692935 4807855 4862815 5245045 5333410 5487124 5752630 5960870 6275516 6858905 6933433 7013812 7749131 7844395 8156980 8767265 9171908 9385870 9615710 9725630 10133479 10490090 10666820 11464885 11505260 11921740 12643319 13717810 13866866 15498262 15688790 16533571 17534530 17833153 18478697 18771740 19231420 19451260 20266958 20980180 22929770 25286638 27435620 27733732 29808701 30996524 31377580 33067142 34667165 35069060 35666306 36957394 38745655 40533916 45859540 50573276 50667395 59617402 63216595 66134284 69334330 71332612 73914788 77491310 82667855 89165765 92393485 101334790 119234804 126433190 131735227 138668660 149043505 154982620 165335710 178331530 184786970 202669580 214936423 240223061 252866380 263470454 298087010 314137849 330671420 356663060 369573940 429872846 480446122 526940908 596174020 628275698 658676135 859745692 960892244 1074682115 1201115305 1256551396 1317352270 1570689245 2149364230 2402230610 2634704540 3141378490 4083792037 4298728460 4804461220 6282756980 8167584074 16335168148 20418960185 40837920370 81675840740
• Sum of all divisors σ(n): 214999142400
• Sum of proper divisors (its aliquot sum) s(n): 133323301660
• 81675840740 is an abundant number, because the sum of its proper divisors (133323301660) is greater than itself. Its abundance is 51647460920

Bases of 81675840740

• Binary: 1001100000100010000100110110011100100₂
• Hexadecimal: 0x1304426CE4
• Base-36: 11IROQ1W

Squares and roots of 81675840740

• 81675840740 squared (81675840740²) is 6670942960585843747600
• 81675840740 cubed (81675840740³) is 544854874834433471027502357224000
• The square root of 81675840740 is 285789.8541586107
• The cube root of 81675840740 is 4338.7491128381

Scales and comparisons

• 81,675,840,740 seconds is equal to 2,597 years, 2 weeks, 5 hours, 32 minutes, 20 seconds.
• To count from 1 to 81,675,840,740 would take you about five thousand, one hundred ninety-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 81675840740 cubic inches would be around 361.6 feet tall.

Recreational maths with 81675840740

• 81675840740 backwards is 04704857618
• The number of decimal digits it has is: 11
• The sum of 81675840740's digits is 50
• More coming soon!