81942589643013

Names of 81942589643013

• Cardinal: 81942589643013 can be written as Eighty-one trillion, nine hundred forty-two billion, five hundred eighty-nine million, six hundred forty-three thousand and thirteen.

Scientific notation

• Scientific notation: 8.1942589643013 × 10¹³

Factors of 81942589643013

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 868

Divisors of 81942589643013

• Number of divisors d(n): 200
• Complete list of divisors:
  1 3 9 11 27 31 33 81 93 99 121 279 297 341 363 823 837 891 961 1023 1089 1331 2469 2511 2883 3069 3267 3751 3993 7407 8649 9053 9207 9801 10571 11253 11979 22221 25513 25947 27159 27621 29791 31713 33759 35937 41261 66663 76539 77841 81477 89373 95139 99583 101277 107811 116281 123783 229617 244431 268119 280643 285417 298749 303831 327701 348843 371349 688851 733293 790903 804357 841929 856251 896247 923521 983103 1046529 1095413 1114047 1279091 2066553 2372709 2413071 2525787 2688741 2770563 2949309 3087073 3139587 3286239 3342141 3604711 3837273 7118127 7577361 8066223 8311689 8699933 8847927 9261219 9418761 9858717 10158731 10814133 11511819 21354381 22732083 24517993 24935067 26099799 26543781 27783657 29576151 30476193 32442399 33957803 34535457 39651821 64063143 73553979 74805201 78299397 83350971 88728453 91428579 95699263 97327197 101873409 103606371 111746041 118955463 220661937 234898191 250052913 269697923 274285737 287097789 291981591 305620227 335238123 356866389 661985811 704694573 760057783 809093769 822857211 861293367 916860681 1005714369 1052691893 1070599167 1229206451 1985957433 2280173349 2427281307 2583880101 2750582043 2966677153 3017143107 3158075679 3211797501 3687619353 6840520047 7281843921 7751640303 8360635613 8900031459 9051429321 9474227037 11062858059 20521560141 21845531763 25081906839 26700094377 28422681111 32633448683 33188574177 61564680423 75245720517 80100283131 85268043333 91966991743 97900346049 99565722531 225737161551 240300849393 275900975229 293701038147 677211484653 827702925687 881103114441 1011636909173 2483108777061 2643309343323 3034910727519 7449326331183 9104732182557 27314196547671 81942589643013
• Sum of all divisors σ(n): 139296709654080
• Sum of proper divisors (its aliquot sum) s(n): 57354120011067
• 81942589643013 is a deficient number, because the sum of its proper divisors (57354120011067) is less than itself. Its deficiency is 24588469631946

Bases of 81942589643013

• Binary: 10010101000011010111110111100101001100100000101₂
• Hexadecimal: 0x4A86BEF29905
• Base-36: T1NWM6FB9

Squares and roots of 81942589643013

• 81942589643013 squared (81942589643013²) is 6714587997403221374779718169
• 81942589643013 cubed (81942589643013³) is 550210728893112608363826997319430460003197
• The square root of 81942589643013 is 9052214.6264333017
• The cube root of 81942589643013 is 43434.6735380211

Scales and comparisons

• 81,942,589,643,013 seconds is equal to 2,605,520 years, 46 weeks, 8 hours, 23 minutes, 33 seconds.
• To count from 1 to 81,942,589,643,013 would take you about six million, five hundred thirteen thousand, eight hundred two 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 81942589643013 cubic inches would be around 3619.6 feet tall.

Recreational maths with 81942589643013

• 81942589643013 backwards is 31034698524918
• The number of decimal digits it has is: 14
• The sum of 81942589643013's digits is 63
• More coming soon!