21000666158017

Names of 21000666158017

• Cardinal: 21000666158017 can be written as Twenty-one trillion, six hundred sixty-six million, one hundred fifty-eight thousand and seventeen.

Scientific notation

• Scientific notation: 2.1000666158017 × 10¹³

Factors of 21000666158017

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 492

Divisors of 21000666158017

• Number of divisors d(n): 240
• Complete list of divisors:
  1 7 13 19 31 49 73 91 133 169 217 247 349 403 511 589 637 931 949 1183 1387 1519 1729 2197 2263 2443 2821 3211 3577 4123 4537 5239 6631 6643 7657 8281 9709 10819 12103 12337 15379 15841 17101 18031 19747 22477 25477 28561 28861 29419 31759 36673 41743 42997 46417 46501 53599 58981 67963 68107 75733 86203 86359 99541 107653 110887 126217 140647 157339 160381 178339 199927 205561 205933 222313 234403 256711 292201 300979 324919 331201 375193 382447 412867 476749 484063 530131 542659 558961 603421 604513 696787 766753 789787 883519 885391 984529 1120639 1122667 1248373 1294033 1399489 1438927 1441531 1640821 1828411 2045407 2084953 2106853 2318407 2672293 2677129 2890069 3047239 3337243 3388441 3798613 3912727 4223947 4305613 4877509 4971811 5367271 5528509 6197737 6292819 6891703 7266493 7844473 7858669 9058231 9967789 10072489 10267231 11485747 12798877 14568307 14594671 15005953 16228849 16822429 18706051 18739903 21330673 23719087 23769343 26590291 27389089 30139291 34739809 34802677 37570897 38699563 39614107 43384159 44049733 50865451 54911311 55972969 63407617 64633543 69774523 71870617 81806647 89592139 94464409 101978149 102162697 105041671 117757003 130942357 133474003 149314711 166385401 189387991 195077389 210975037 243178663 243618739 277298749 308348131 309001459 356058157 391810783 451617517 452434801 488421661 503094319 572646529 661250863 713847043 727648597 735291697 824299021 934318021 1063486411 1164697807 1228037317 1325715937 1365541723 1702250641 1735162039 1941091243 2163010213 2536006057 2742675481 3161322619 3167043607 4008525703 4628756041 5093540179 5871027721 6540226147 7444404877 8596261219 9280011559 9558792061 12146134273 13825323343 15141071491 17752042399 22129258333 22557106507 32968078741 35654781253 41097194047 52110834139 60173828533 85022939911 96777263401 124264296793 157899745549 230776551187 287680358329 428585023633 677440843807 1105298218843 1615435858309 3000095165431 21000666158017
• Sum of all divisors σ(n): 29234046912000
• Sum of proper divisors (its aliquot sum) s(n): 8233380753983
• 21000666158017 is a deficient number, because the sum of its proper divisors (8233380753983) is less than itself. Its deficiency is 12767285404034

Bases of 21000666158017

• Binary: 100110001100110011001001111110001001111000001₂
• Hexadecimal: 0x1319993F13C1
• Base-36: 7FZKMEQIP

Squares and roots of 21000666158017

• 21000666158017 squared (21000666158017²) is 441027979080480503613372289
• 21000666158017 cubed (21000666158017³) is 9261881355014076346256512314418722990913
• The square root of 21000666158017 is 4582648.3781779505
• The cube root of 21000666158017 is 27589.5334876247

Scales and comparisons

• 21,000,666,158,017 seconds is equal to 667,756 years, 11 weeks, 4 days, 17 hours, 13 minutes, 37 seconds.
• To count from 1 to 21,000,666,158,017 would take you about one million, six hundred sixty-nine thousand, three hundred ninety 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 21000666158017 cubic inches would be around 2299.1 feet tall.

Recreational maths with 21000666158017

• 21000666158017 backwards is 71085166600012
• The number of decimal digits it has is: 14
• The sum of 21000666158017's digits is 43
• More coming soon!