21072557978129472

Names of 21072557978129472

• Cardinal: 21072557978129472 can be written as Twenty-one quadrillion, seventy-two trillion, five hundred fifty-seven billion, nine hundred seventy-eight million, one hundred twenty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1072557978129472 × 10¹⁶

Factors of 21072557978129472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 512667

Divisors of 21072557978129472

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 96 101 102 136 192 202 204 272 303 404 408 544 606 808 816 1088 1212 1616 1632 1717 2424 3232 3264 3434 4848 5151 6464 6868 9696 10302 13736 19392 20604 27472 41208 54944 82416 109888 164832 214391 298153 329664 428782 596306 643173 857564 894459 1192612 1286346 1715128 1788918 2385224 2572692 3430256 3577836 3644647 4770448 5068601 5145384 6860512 7155672 7289294 9540896 10137202 10290768 10933941 13721024 14311344 14578588 15205803 19081792 20274404 20581536 21653491 21867882 28622688 29157176 30113453 30411606 40548808 41163072 43306982 43735764 57245376 58314352 60226906 60823212 64960473 81097616 86613964 87471528 90340359 116628704 120453812 121646424 129920946 162195232 173227928 174943056 180680718 233257408 240907624 243292848 259841892 324390464 346455856 349886112 361361436 368109347 481815248 486585696 511928701 519683784 692911712 699772224 722722872 736218694 963630496 973171392 1023857402 1039367568 1104328041 1385823424 1445445744 1472437388 1535786103 1927260992 2047714804 2078735136 2208656082 2890891488 2944874776 3071572206 4095429608 4157470272 4417312164 5781782976 5889749552 6143144412 8190859216 8834624328 11779499104 12286288824 16381718432 17669248656 23558998208 24572577648 32763436864 35338497312 49145155296 63921319823 70676994624 98290310592 127842639646 191763959469 255685279292 383527918938 511370558584 767055837876 1022741117168 1086662436991 1534111675752 2045482234336 2173324873982 3068223351504 3259987310973 4090964468672 4346649747964 6136446703008 6456053302123 6519974621946 8693299495928 12272893406016 12912106604246 13039949243892 17386598991856 19368159906369 25824213208492 26079898487784 34773197983712 38736319812738 51648426416984 52159796975568 69546395967424 77472639625476 103296852833968 104319593951136 109752906136091 154945279250952 206593705667936 208639187902272 219505812272182 309890558501904 329258718408273 413187411335872 439011624544364 619781117003808 658517436816546 878023249088728 1239562234007616 1317034873633092 1756046498177456 2634069747266184 3512092996354912 5268139494532368 7024185992709824 10536278989064736 21072557978129472
• Sum of all divisors σ(n): 59619125987645184
• Sum of proper divisors (its aliquot sum) s(n): 38546568009515712
• 21072557978129472 is an abundant number, because the sum of its proper divisors (38546568009515712) is greater than itself. Its abundance is 17474010031386240

Bases of 21072557978129472

• Binary: 1001010110111010110000100111100110010111001010001000000₂
• Hexadecimal: 0x4ADD613CCB9440
• Base-36: 5RHLJHQUREO

Squares and roots of 21072557978129472

• 21072557978129472 squared (21072557978129472²) is 444052699741628060937071994998784
• 21072557978129472 cubed (21072557978129472³) is 9357326260650375325349114692477646464835234562048
• The square root of 21072557978129472 is 145163900.3958266203
• The cube root of 21072557978129472 is 276209.8015257801

Scales and comparisons

• 21,072,557,978,129,472 seconds is equal to 670,042,162 years, 1 day, 2 hours, 11 minutes, 12 seconds.
• To count from 1 to 21,072,557,978,129,472 would take you about two billion, ten million, one hundred twenty-six thousand, four hundred eighty-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 21072557978129472 cubic inches would be around 23017.5 feet tall.

Recreational maths with 21072557978129472

• 21072557978129472 backwards is 27492187975527012
• The number of decimal digits it has is: 17
• The sum of 21072557978129472's digits is 78
• More coming soon!