21018876877908

Names of 21018876877908

• Cardinal: 21018876877908 can be written as Twenty-one trillion, eighteen billion, eight hundred seventy-six million, eight hundred seventy-seven thousand, nine hundred eight.

Scientific notation

• Scientific notation: 2.1018876877908 × 10¹³

Factors of 21018876877908

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 31375

Divisors of 21018876877908

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 21 26 27 28 36 39 42 52 54 63 78 84 91 108 117 126 156 169 182 189 234 252 273 338 351 364 378 409 468 507 546 676 702 756 818 819 1014 1092 1183 1227 1404 1521 1636 1638 2028 2197 2366 2454 2457 2863 3042 3276 3549 3681 4394 4563 4732 4908 4914 5317 5726 6084 6591 7098 7362 8589 8788 9126 9828 10634 10647 11043 11452 13182 14196 14724 15379 15951 17178 18252 19773 21268 21294 22086 25767 26364 30758 30941 31902 31941 34356 37219 39546 42588 44172 46137 47853 51534 59319 61516 61882 63804 63882 69121 74438 77301 79092 92274 92823 95706 103068 111657 118638 123764 127764 138242 138411 143559 148876 154602 184548 185646 191412 207363 216587 223314 237276 276484 276822 278469 287118 309204 334971 371292 402233 414726 415233 433174 446628 483847 553644 556938 574236 622089 649761 669942 804466 829452 830466 835407 866348 898573 967694 1004913 1113876 1206699 1244178 1299522 1339884 1451541 1608932 1660932 1670814 1797146 1866267 1935388 1949283 2009826 2413398 2488356 2599044 2695719 2815631 2903082 3341628 3594292 3620097 3732534 3898566 4019652 4354623 4826796 5229029 5391438 5631262 5806164 5847849 6290011 7240194 7465068 7797132 8087157 8446893 8709246 10458058 10782876 10860291 11262524 11695698 12580022 12654869 13063869 14480388 15687087 16174314 16893786 17418492 18870033 20916116 21720582 23391396 24261471 25160044 25309738 25340679 26127738 31374174 32348628 33787572 36603203 37740066 37964607 43441164 47061261 48522942 50619476 50681358 52255476 56610099 62748348 67977377 73206406 75480132 75929214 76022037 88584083 94122522 97045884 101362716 109809609 113220198 113893821 135954754 141183783 146412812 151858428 152044074 164513297 169830297 177168166 188245044 203932131 219619218 226440396 227787642 265752249 271909508 282367566 304088148 329026594 329428827 339660594 341681463 354336332 407864262 439238436 455575284 475841639 493539891 531504498 564735132 611796393 658053188 658857654 679321188 683362926 797256747 815728524 951683278 987079782 988286481 1063008996 1151593079 1223592786 1317715308 1366725852 1427524917 1480619673 1594513494 1835389179 1903366556 1974159564 1976572962 2138672861 2303186158 2391770241 2447185572 2855049834 2961239346 3189026988 3454779237 3670778358 3953145924 4277345722 4282574751 4441859019 4606372316 4783540482 5710099668 5922478692 6416018583 6909558474 7341556716 8554691444 8565149502 8883718038 9567080964 10364337711 12832037166 12847724253 13819116948 14970710027 17130299004 17767436076 19248055749 20728675422 25664074332 25695448506 27802747193 29941420054 31093013133 38496111498 41457350844 44912130081 51390897012 55605494386 57744167247 59882840108 62186026266 76992222996 83408241579 89824260162 111210988772 115488334494 124372052532 134736390243 166816483158 179648520324 194619230351 230976668988 250224724737 269472780486 333632966316 389238460702 404209170729 500449449474 538945560972 583857691053 750674174211 778476921404 808418341458 1000898898948 1167715382106 1501348348422 1616836682916 1751573073159 2335430764212 3002696696844 3503146146318 5254719219477 7006292292636 10509438438954 21018876877908
• Sum of all divisors σ(n): 67632776064000
• Sum of proper divisors (its aliquot sum) s(n): 46613899186092
• 21018876877908 is an abundant number, because the sum of its proper divisors (46613899186092) is greater than itself. Its abundance is 25595022308184

Bases of 21018876877908

• Binary: 100110001110111010110101100001001110001010100₂
• Hexadecimal: 0x131DD6B09C54
• Base-36: 7G7XSLNX0

Squares and roots of 21018876877908

• 21018876877908 squared (21018876877908²) is 441793185208655553538456464
• 21018876877908 cubed (21018876877908³) is 9285996565399536846696557344053701397312
• The square root of 21018876877908 is 4584634.8685482031
• The cube root of 21018876877908 is 27597.5059348863

Scales and comparisons

• 21,018,876,877,908 seconds is equal to 668,335 years, 13 weeks, 6 days, 22 hours, 31 minutes, 48 seconds.
• To count from 1 to 21,018,876,877,908 would take you about one million, six hundred seventy thousand, eight hundred thirty-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 21018876877908 cubic inches would be around 2299.8 feet tall.

Recreational maths with 21018876877908

• 21018876877908 backwards is 80977867881012
• The number of decimal digits it has is: 14
• The sum of 21018876877908's digits is 72
• More coming soon!