21018977616

Names of 21018977616

• Cardinal: 21018977616 can be written as Twenty-one billion, eighteen million, nine hundred seventy-seven thousand, six hundred sixteen.

Scientific notation

• Scientific notation: 2.1018977616 × 10¹⁰

Factors of 21018977616

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 493

Divisors of 21018977616

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 17 21 23 24 26 28 31 34 39 42 46 48 51 52 56 62 68 69 78 84 91 92 93 102 104 112 119 124 136 138 156 161 168 182 184 186 204 208 217 221 238 248 272 273 276 299 312 322 336 357 364 368 372 391 397 403 408 434 442 476 483 496 527 546 552 598 624 644 651 663 713 714 728 744 782 794 806 816 868 884 897 952 966 1054 1092 1104 1173 1191 1196 1209 1288 1302 1326 1426 1428 1456 1488 1547 1564 1581 1588 1612 1736 1768 1794 1904 1932 2093 2108 2139 2184 2346 2382 2392 2418 2576 2604 2652 2737 2779 2821 2852 2856 3094 3128 3162 3176 3224 3472 3536 3588 3689 3864 4186 4216 4278 4368 4641 4692 4764 4784 4836 4991 5083 5161 5208 5304 5474 5558 5642 5704 5712 6188 6256 6279 6324 6352 6448 6749 6851 7176 7378 7728 8211 8337 8372 8432 8463 8556 9131 9269 9282 9384 9528 9672 9982 10166 10322 10416 10608 10948 11067 11116 11284 11408 12121 12307 12376 12558 12648 13498 13702 14352 14756 14973 15249 15483 16422 16674 16744 16926 17112 18262 18538 18564 18768 19056 19344 19964 20247 20332 20553 20644 21896 22134 22232 22568 24242 24614 24752 25116 25296 26996 27393 27404 27807 29512 29946 30498 30966 32844 33348 33488 33852 34224 35581 36127 36363 36524 36921 37076 37128 39928 40494 40664 41106 41288 43792 44268 44464 45136 47243 47957 48484 49228 50232 53992 54786 54808 55614 59024 59892 60996 61932 63917 64883 65688 66696 67704 71162 72254 72726 73048 73842 74152 74256 79856 80988 81328 82212 82576 84847 86149 87737 88536 94486 95914 96968 98456 100464 106743 107984 108381 109572 109616 111228 118703 119784 121992 123864 127834 129766 131376 133392 135408 141729 142324 143871 144508 145452 146096 147684 148304 155227 157573 159991 161976 164424 169694 172298 175474 177072 188972 191751 191828 193936 194649 196912 209219 213486 216762 219144 222456 237406 239568 243984 247728 254541 255668 258447 259532 263211 283061 283458 284648 287742 289016 290904 295368 310454 315146 319982 323952 328848 339388 344596 350948 356109 377944 383502 383656 389298 418438 426972 433524 438288 444912 465681 472719 474812 479973 509082 511336 516894 519064 526422 566122 566916 569296 575484 578032 581808 590736 614159 620908 627657 630292 639964 678776 689192 701896 712218 755888 767004 767312 778596 830921 836876 849183 853944 867048 931362 945438 949624 959946 1018164 1022672 1033788 1038128 1052844 1086589 1103011 1119937 1132244 1133832 1150968 1228318 1241816 1255314 1260584 1279928 1357552 1378384 1403792 1424436 1464533 1534008 1557192 1661842 1673752 1698366 1707888 1734096 1842477 1862724 1890876 1899248 1919892 1981427 2017951 2036328 2067576 2105688 2173178 2206022 2239874 2264488 2267664 2301936 2456636 2483632 2492763 2510628 2521168 2559856 2719847 2848872 2929066 3068016 3114384 3259767 3309033 3323684 3347504 3359811 3396732 3679793 3684954 3725448 3781752 3839784 3962854 4035902 4072656 4135152 4211376 4346356 4393599 4412044 4479748 4528976 4812037 4913272 4985526 5021256 5439694 5697744 5858132 5944281 6053853 6519534 6618066 6647368 6719622 6793464 7359586 7369908 7450896 7563504 7679568 7925708 8071804 8159541 8692712 8787198 8824088 8959496 9624074 9826544 9971052 10042512 10879388 11039379 11716264 11888562 12107706 13039068 13236132 13294736 13439244 13586928 14125657 14436111 14719172 14739816 15851416 16143608 16319082 17385424 17574396 17648176 17918992 19038929 19248148 19942104 21758776 22078758 23432528 23777124 24215412 25758551 26078136 26472264 26878488 28251314 28872222 29438344 29479632 31702832 32287216 32638164 33684259 35148792 38077858 38496296 39884208 42376971 43517552 44157516 47554248 48430824 51517102 52156272 52944528 53756976 56502628 57116787 57744444 58876688 62556481 65276328 67368518 70297584 76155716 76992592 77275653 84753942 88315032 95108496 96861648 101052777 103034204 113005256 114233574 115488888 125112962 130552656 134737036 152311432 154551306 169507884 176630064 187669443 202105554 206068408 226010512 228467148 230977776 250225924 269474072 304622864 309102612 339015768 375338886 404211108 412136816 437895367 456934296 500451848 538948144 618205224 678031536 750677772 808422216 875790734 913868592 1000903696 1236410448 1313686101 1501355544 1616844432 1751581468 2627372202 3002711088 3503162936 5254744404 7006325872 10509488808 21018977616
• Sum of all divisors σ(n): 76411109376
• Sum of proper divisors (its aliquot sum) s(n): 55392131760
• 21018977616 is an abundant number, because the sum of its proper divisors (55392131760) is greater than itself. Its abundance is 34373154144

Bases of 21018977616

• Binary: 10011100100110101000010010101010000₂
• Hexadecimal: 0x4E4D42550
• Base-36: 9NM5MXC

Squares and roots of 21018977616

• 21018977616 squared (21018977616²) is 441797420021909043456
• 21018977616 cubed (21018977616³) is 9286130082247056413989635280896
• The square root of 21018977616 is 144979.2316712983
• The cube root of 21018977616 is 2759.7550024075

Scales and comparisons

• 21,018,977,616 seconds is equal to 668 years, 17 weeks, 4 days, 4 hours, 53 minutes, 36 seconds.
• To count from 1 to 21,018,977,616 would take you about one thousand, three hundred thirty-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 21018977616 cubic inches would be around 230 feet tall.

Recreational maths with 21018977616

• 21018977616 backwards is 61677981012
• 21018977616 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21018977616's digits is 48
• More coming soon!