81975844670013

Names of 81975844670013

• Cardinal: 81975844670013 can be written as Eighty-one trillion, nine hundred seventy-five billion, eight hundred forty-four million, six hundred seventy thousand and thirteen.

Scientific notation

• Scientific notation: 8.1975844670013 × 10¹³

Factors of 81975844670013

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 448

Divisors of 81975844670013

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 19 21 49 57 63 133 147 171 343 361 399 419 441 931 1029 1083 1197 1257 2527 2793 2933 3087 3249 3771 6517 7581 7961 8379 8799 17689 19551 20531 22743 23883 26397 53067 55727 58653 61593 71649 123823 143717 151259 159201 167181 175561 184779 371469 390089 431151 453777 501543 526683 1058813 1114407 1170267 1228927 1293453 1361331 1580049 2730623 3176439 3335659 3510801 3686781 7411691 8191869 8602489 9529317 10006977 11060343 22235073 23349613 24575607 25807467 30020931 51881837 60217423 63377521 66705219 70048839 73560059 77422401 155645511 163447291 180652269 190132563 210146517 220680177 443642647 466936533 490341873 514920413 541956807 570397689 662040531 1144131037 1330927941 1397641121 1471025619 1544761239 3105498529 3432393111 3604442891 3992783823 4192923363 4634283717 9316495587 9783487847 10297179333 10813328673 12578770089 21738489703 25231100237 26555181299 27949486761 29350463541 32439986019 65215469109 68484414929 75693300711 79665543897 88051390623 185886269093 195646407327 205453244787 227079902133 238996631691 479390904503 557658807279 616359734361 1301203883651 1438172713509 1672976421837 3903611650953 4314518140527 9108427185557 11710834952859 27325281556671 81975844670013
• Sum of all divisors σ(n): 146085842448000
• Sum of proper divisors (its aliquot sum) s(n): 64109997777987
• 81975844670013 is a deficient number, because the sum of its proper divisors (64109997777987) is less than itself. Its deficiency is 17865846892026

Bases of 81975844670013

• Binary: 10010101000111001111101000110100000101000111101₂
• Hexadecimal: 0x4A8E7D1A0A3D
• Base-36: T236LD2D9

Squares and roots of 81975844670013

• 81975844670013 squared (81975844670013²) is 6720039109362098780861420169
• 81975844670013 cubed (81975844670013³) is 550880882205479912953513855853700347692197
• The square root of 81975844670013 is 9054051.2849228437
• The cube root of 81975844670013 is 43440.5484881681

Scales and comparisons

• 81,975,844,670,013 seconds is equal to 2,606,578 years, 15 weeks, 1 day, 11 hours, 53 minutes, 33 seconds.
• To count from 1 to 81,975,844,670,013 would take you about six million, five hundred sixteen thousand, four hundred forty-five 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 81975844670013 cubic inches would be around 3620 feet tall.

Recreational maths with 81975844670013

• 81975844670013 backwards is 31007644857918
• 81975844670013 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81975844670013's digits is 63
• More coming soon!