21078335988405

Names of 21078335988405

• Cardinal: 21078335988405 can be written as Twenty-one trillion, seventy-eight billion, three hundred thirty-five million, nine hundred eighty-eight thousand, four hundred five.

Scientific notation

• Scientific notation: 2.1078335988405 × 10¹³

Factors of 21078335988405

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 469

Divisors of 21078335988405

• Number of divisors d(n): 162
• Complete list of divisors:
  1 3 5 9 15 17 45 51 85 127 153 255 289 317 381 635 765 867 951 1143 1445 1585 1905 2159 2601 2853 4335 4755 5389 5715 6477 10795 13005 14265 16129 16167 19431 26945 32385 36703 40259 48387 48501 80645 80835 91613 97155 100489 110109 120777 145161 183515 201295 241935 242505 274193 274839 301467 330327 362331 458065 502445 550545 603885 684403 725805 822579 824517 904401 1370965 1374195 1507335 1651635 1708313 1811655 2053209 2467737 3422015 4112895 4122585 4522005 4661281 5112893 5124939 6159627 8541565 10266045 11634851 12338685 12762103 13983843 15338679 15374817 23306405 25564465 25624695 29041321 30798135 34904553 38286309 41951529 46016037 58174255 63810515 69919215 76693395 76874085 86919181 87123963 104713659 114858927 145206605 174522765 191431545 209757645 216955751 230080185 260757543 261371889 434595905 435619815 523568295 574294635 650867253 782272629 1084778755 1303787715 1306859445 1477626077 1620787081 1952601759 3254336265 3688247767 3911363145 4432878231 4862361243 7388130385 8103935405 9763008795 11064743301 13298634693 14587083729 18441238835 22164391155 24311806215 27553380377 33194229903 55323716505 66493173465 72935418645 82660141131 137766901885 165971149515 247980423393 413300705655 468407466409 1239902116965 1405222399227 2342037332045 4215667197681 7026111996135 21078335988405
• Sum of all divisors σ(n): 39243169328454
• Sum of proper divisors (its aliquot sum) s(n): 18164833340049
• 21078335988405 is a deficient number, because the sum of its proper divisors (18164833340049) is less than itself. Its deficiency is 2913502648356

Bases of 21078335988405

• Binary: 100110010101110101110101110101010001010110101₂
• Hexadecimal: 0x132BAEBAA2B5
• Base-36: 7GZ950R79

Squares and roots of 21078335988405

• 21078335988405 squared (21078335988405²) is 444296248040089388294444025
• 21078335988405 cubed (21078335988405³) is 9365025594576730600479921634868321530125
• The square root of 21078335988405 is 4591114.8960143657
• The cube root of 21078335988405 is 27623.5044422699

Scales and comparisons

• 21,078,335,988,405 seconds is equal to 670,225 years, 46 weeks, 2 hours, 6 minutes, 45 seconds.
• To count from 1 to 21,078,335,988,405 would take you about one million, six hundred seventy-five thousand, five hundred sixty-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 21078335988405 cubic inches would be around 2302 feet tall.

Recreational maths with 21078335988405

• 21078335988405 backwards is 50488953387012
• The number of decimal digits it has is: 14
• The sum of 21078335988405's digits is 63
• More coming soon!