21000645921792

Names of 21000645921792

• Cardinal: 21000645921792 can be written as Twenty-one trillion, six hundred forty-five million, nine hundred twenty-one thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 2.1000645921792 × 10¹³

Factors of 21000645921792

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1023

Divisors of 21000645921792

• Number of divisors d(n): 198
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 89 96 128 178 192 256 267 356 384 512 534 712 768 929 1024 1068 1424 1536 1858 2136 2787 2848 3072 3716 4272 5574 5696 7432 7921 8544 11148 11392 14864 15842 17088 22296 22784 23763 29728 31684 34176 44592 45568 47526 59456 63368 68352 82681 89184 91136 95052 118912 126736 136704 165362 178368 190104 237824 248043 253472 273408 330724 356736 380208 475648 496086 506944 661448 713472 760416 863041 951296 992172 1013888 1322896 1426944 1520832 1726082 1984344 2027776 2589123 2645792 2853888 3041664 3452164 3968688 4055552 5178246 5291584 6083328 6904328 7358609 7937376 8111104 10356492 10583168 12166656 13808656 14717218 15874752 20712984 21166336 22075827 24333312 27617312 29434436 31749504 41425968 42332672 44151654 55234624 58868872 63499008 76810649 82851936 84665344 88303308 110469248 117737744 126998016 153621298 165703872 176606616 220938496 230431947 235475488 253996032 307242596 331407744 353213232 441876992 460863894 470950976 614485192 662815488 706426464 883753984 921727788 941901952 1228970384 1325630976 1412852928 1843455576 1883803904 2457940768 2651261952 2825705856 3686911152 3767607808 4915881536 5651411712 6836147761 7373822304 7535215616 9831763072 11302823424 13672295522 14747644608 19663526144 20508443283 22605646848 27344591044 29495289216 39327052288 41016886566 54689182088 58990578432 78654104576 82033773132 109378364176 117981156864 164067546264 218756728352 235962313728 328135092528 437513456704 656270185056 875026913408 1312540370112 1750053826816 2625080740224 3500107653632 5250161480448 7000215307264 10500322960896 21000645921792
• Sum of all divisors σ(n): 56671372524028
• Sum of proper divisors (its aliquot sum) s(n): 35670726602236
• 21000645921792 is an abundant number, because the sum of its proper divisors (35670726602236) is greater than itself. Its abundance is 14670080680444

Bases of 21000645921792

• Binary: 100110001100110011000000010100100110000000000₂
• Hexadecimal: 0x1319980A4C00
• Base-36: 7FZKAD05C

Squares and roots of 21000645921792

• 21000645921792 squared (21000645921792²) is 441027129132478961380491264
• 21000645921792 cubed (21000645921792³) is 9261854580815628055206453729711083225088
• The square root of 21000645921792 is 4582646.1702592751
• The cube root of 21000645921792 is 27589.5246258713

Scales and comparisons

• 21,000,645,921,792 seconds is equal to 667,755 years, 30 weeks, 1 day, 12 hours, 3 minutes, 12 seconds.
• To count from 1 to 21,000,645,921,792 would take you about one million, six hundred sixty-nine thousand, three hundred eighty-eight 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 21000645921792 cubic inches would be around 2299.1 feet tall.

Recreational maths with 21000645921792

• 21000645921792 backwards is 29712954600012
• 21000645921792 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21000645921792's digits is 48
• More coming soon!