21555012008544

Names of 21555012008544

• Cardinal: 21555012008544 can be written as Twenty-one trillion, five hundred fifty-five billion, twelve million, eight thousand, five hundred forty-four.

Scientific notation

• Scientific notation: 2.1555012008544 × 10¹³

Factors of 21555012008544

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2636

Divisors of 21555012008544

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 84 96 98 103 112 147 168 196 206 224 294 309 336 343 392 412 588 618 672 686 721 784 824 1029 1176 1236 1372 1442 1568 1648 2058 2163 2352 2472 2521 2744 2884 3296 4116 4326 4704 4944 5042 5047 5488 5768 7563 8232 8652 9888 10084 10094 10976 11536 15126 15141 16464 17304 17647 20168 20188 23072 30252 30282 32928 34608 35294 35329 40336 40376 52941 60504 60564 69216 70588 70658 80672 80752 105882 105987 121008 121128 123529 141176 141316 161504 211764 211974 242016 242256 247058 259663 282352 282632 370587 423528 423948 484512 494116 519326 564704 565264 741174 778989 847056 847896 864703 988232 1038652 1130528 1482348 1557978 1694112 1695792 1729406 1817641 1976464 2077304 2594109 2964696 3115956 3391584 3458812 3635282 3952928 4154608 5188218 5452923 5929392 6231912 6355441 6917624 7270564 8309216 10376436 10905846 11858784 12463824 12710882 12723487 13835248 14541128 19066323 20752872 21811692 24927648 25421764 25446974 27670496 29082256 38132646 38170461 41505744 43623384 44488087 50843528 50893948 58164512 76265292 76340922 83011488 87246768 88976174 89064409 101687056 101787896 133464261 152530584 152681844 174493536 177952348 178128818 203374112 203575792 266928522 267193227 305061168 305363688 311416609 355904696 356257636 407151584 533857044 534386454 610122336 610727376 622833218 654610423 711809392 712515272 934249827 1067714088 1068772908 1221454752 1245666436 1309220846 1423618784 1425030544 1868499654 1963831269 2135428176 2137545816 2179916263 2491332872 2618441692 2850061088 3736999308 3927662538 4270856352 4275091632 4359832526 4582272961 4982665744 5236883384 6539748789 7473998616 7855325076 8550183264 8719665052 9164545922 9965331488 10473766768 13079497578 13746818883 14947997232 15710650152 17439330104 18329091844 20947533536 26158995156 27493637766 29895994464 31421300304 32075910727 34878660208 36658183688 52317990312 54987275532 62842600608 64151821454 69757320416 73316367376 96227732181 104635980624 109974551064 128303642908 146632734752 192455464362 209271961248 219949102128 224531375089 256607285816 384910928724 439898204256 449062750178 513214571632 673594125267 769821857448 898125500356 1026429143264 1347188250534 1539643714896 1796251000712 2694376501068 3079287429792 3592502001424 5388753002136 7185004002848 10777506004272 21555012008544
• Sum of all divisors σ(n): 66651797721600
• Sum of proper divisors (its aliquot sum) s(n): 45096785713056
• 21555012008544 is an abundant number, because the sum of its proper divisors (45096785713056) is greater than itself. Its abundance is 23541773704512

Bases of 21555012008544

• Binary: 100111001101010101010110101010111101001100000₂
• Hexadecimal: 0x139AAAD57A60
• Base-36: 7N28HM6AO

Squares and roots of 21555012008544

• 21555012008544 squared (21555012008544²) is 464618542688476045128999936
• 21555012008544 cubed (21555012008544³) is 10014858267042314243198474498061407453184
• The square root of 21555012008544 is 4642737.5554239549
• The cube root of 21555012008544 is 27830.1847702865

Scales and comparisons

• 21,555,012,008,544 seconds is equal to 685,382 years, 36 weeks, 5 days, 15 hours, 42 minutes, 24 seconds.
• To count from 1 to 21,555,012,008,544 would take you about one million, seven hundred thirteen thousand, four hundred fifty-six 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 21555012008544 cubic inches would be around 2319.2 feet tall.

Recreational maths with 21555012008544

• 21555012008544 backwards is 44580021055512
• 21555012008544 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21555012008544's digits is 42
• More coming soon!