21117709819791

Names of 21117709819791

• Cardinal: 21117709819791 can be written as Twenty-one trillion, one hundred seventeen billion, seven hundred nine million, eight hundred nineteen thousand, seven hundred ninety-one.

Scientific notation

• Scientific notation: 2.1117709819791 × 10¹³

Factors of 21117709819791

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 586

Divisors of 21117709819791

• Number of divisors d(n): 162
• Complete list of divisors:
  1 3 9 13 27 39 79 81 117 169 237 243 351 491 507 711 729 1027 1053 1473 1521 2133 2187 3081 3159 4419 4563 6383 6399 6561 9243 9477 13257 13351 13689 19149 19197 27729 28431 38789 39771 40053 41067 57447 57591 82979 83187 85293 116367 119313 120159 123201 172341 172773 241081 248937 249561 349101 357939 360477 369603 504257 517023 518319 723243 746811 748683 1047303 1073817 1081431 1108809 1512771 1551069 2169729 2240433 2246049 3134053 3141909 3221451 3244293 4538313 4653207 6509187 6555341 6721299 6738147 9402159 9425727 9732879 13614939 13959621 19045399 19527561 19666023 20163897 28206477 28277181 29198637 40742689 40844817 41878863 57136197 58582683 58998069 60491691 84619431 84831543 87595911 122228067 122534451 171408591 175748049 176994207 181475073 247590187 253858293 254494629 366684201 367603353 514225773 527244147 530982621 544425219 742770561 761574879 1100052603 1102810059 1542677319 1581732441 1592947863 2228311683 2284724637 3218672431 3300157809 3308430177 4628031957 4778843589 6684935049 6854173911 9656017293 9900473427 13884095871 14336530767 20054805147 20562521733 28968051879 29701420281 41652287613 43009592301 60164415441 86904155637 89104260843 124956862839 180493246323 260712466911 267312782529 541479738969 782137400733 1624439216907 2346412202199 7039236606597 21117709819791
• Sum of all divisors σ(n): 34803963233520
• Sum of proper divisors (its aliquot sum) s(n): 13686253413729
• 21117709819791 is a deficient number, because the sum of its proper divisors (13686253413729) is less than itself. Its deficiency is 7431456406062

Bases of 21117709819791

• Binary: 100110011010011011001100101111001111110001111₂
• Hexadecimal: 0x1334D9979F8F
• Base-36: 7HHCB6LXR

Squares and roots of 21117709819791

• 21117709819791 squared (21117709819791²) is 445957668032897229695283681
• 21117709819791 cubed (21117709819791³) is 9417604625429408757968012276933133130671
• The square root of 21117709819791 is 4595400.9422237579
• The cube root of 21117709819791 is 27640.6937605375

Scales and comparisons

• 21,117,709,819,791 seconds is equal to 671,477 years, 44 weeks, 1 day, 17 hours, 29 minutes, 51 seconds.
• To count from 1 to 21,117,709,819,791 would take you about one million, six hundred seventy-eight thousand, six 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 21117709819791 cubic inches would be around 2303.4 feet tall.

Recreational maths with 21117709819791

• 21117709819791 backwards is 19791890771112
• The number of decimal digits it has is: 14
• The sum of 21117709819791's digits is 63
• More coming soon!