21511342881420

Names of 21511342881420

• Cardinal: 21511342881420 can be written as Twenty-one trillion, five hundred eleven billion, three hundred forty-two million, eight hundred eighty-one thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.151134288142 × 10¹³

Factors of 21511342881420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 536

Divisors of 21511342881420

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 43 49 60 70 84 86 98 103 105 129 140 147 172 196 206 210 215 245 258 294 301 309 373 412 420 430 490 515 516 588 602 618 645 721 735 746 860 903 980 1030 1119 1204 1236 1290 1442 1470 1492 1505 1545 1806 1849 1865 2060 2107 2163 2238 2580 2611 2884 2940 3010 3090 3605 3612 3698 3730 4214 4326 4429 4476 4515 5047 5222 5547 5595 6020 6180 6321 7210 7396 7460 7833 8428 8652 8858 9030 9245 10094 10444 10535 10609 10815 11094 11190 12642 12943 13055 13287 14420 15141 15666 16039 17716 18060 18277 18490 20188 21070 21218 21630 22145 22188 22380 25235 25284 25886 26110 26574 27735 30282 31003 31332 31605 31827 32078 36554 36980 38419 38829 39165 42140 42436 43260 44290 48117 50470 51772 52220 53045 53148 54831 55470 60564 62006 63210 63654 64156 64715 66435 73108 74263 75705 76838 77658 78330 80195 88580 90601 91385 93009 96234 100940 106090 109662 110940 112273 115257 124012 126420 127308 129430 132870 148526 151410 153676 155015 155316 156660 159135 160390 181202 182770 186018 190447 192095 192468 194145 212180 217021 219324 222789 224546 230514 240585 258860 265740 268933 271803 274155 297052 302820 310030 318270 320780 336819 362404 365540 371315 372036 380894 384190 388290 434042 445578 449092 453005 456187 461028 465045 481170 519841 537866 543606 548310 561365 571341 576285 620060 636540 651063 673638 689677 742630 761788 768380 776580 785911 806799 868084 891156 906010 912374 930090 952235 962340 1039682 1075732 1085105 1087212 1096620 1113945 1122730 1142682 1152570 1302126 1333129 1344665 1347276 1359015 1368561 1379354 1485260 1559523 1571822 1613598 1652017 1684095 1812020 1824748 1860180 1882531 1904470 2069031 2079364 2170210 2227890 2245460 2280935 2285364 2305140 2357733 2599205 2604252 2666258 2689330 2718030 2737122 2758708 2856705 3119046 3143644 3193309 3227196 3255315 3304034 3368190 3448385 3765062 3808940 3929555 3957157 3999387 4033995 4138062 4340420 4455780 4561870 4715466 4827739 4956051 5198410 5332516 5378660 5436060 5474244 5647593 5713410 6238092 6386618 6510630 6608068 6665645 6736380 6842805 6896770 7530124 7797615 7859110 7914314 7998774 8067990 8260085 8276124 9123740 9331903 9412655 9430932 9579927 9655478 9912102 10345155 10396820 11295186 11426820 11564119 11788665 11871471 12773236 13021260 13331290 13685610 13793540 14483217 15595230 15718220 15828628 15966545 15997548 16135980 16520170 18663806 18825310 19159854 19310956 19616041 19785785 19824204 19996935 20690310 22353163 22590372 23128238 23577330 23742942 24138695 24780255 26662580 27371220 27700099 27995709 28237965 28966434 31190460 31933090 33040340 33794173 34692357 37327612 37650620 38319708 39232082 39571570 39993870 41380620 44706326 46256476 46659515 47154660 47485884 47899635 48277390 49560510 55400198 55991418 56475930 57820595 57932868 58848123 59357355 63866180 67059489 67588346 69384714 71036731 72416085 78464164 79143140 79987740 80948833 83100297 89412652 93319030 95799270 96554780 98080205 99121020 101382519 110800396 111765815 111982836 112951860 115641190 117696246 118714710 134118978 135176692 137312287 138500495 138769428 139978545 142073462 144832170 161897666 166200594 168970865 170157751 173461785 186638060 191598540 193900693 196160410 202765038 213110193 223531630 231282380 235392492 237429420 242846499 268237956 274624574 277000990 279957090 284146924 289664340 294240615 323795332 332401188 335297445 337941730 340315502 346923570 355183655 387801386 392320820 404744165 405530076 411936861 415501485 426220386 447063260 485692998 497257117 506912595 510473253 549249148 554001980 559914180 581702079 588481230 670594890 675883460 680631004 686561435 693847140 710367310 775602772 809488330 823873722 831002970 850788755 852440772 961186009 969503465 971385996 994514234 1013825190 1020946506 1065550965 1163404158 1176962460 1191104257 1214232495 1341189780 1373122870 1420734620 1491771351 1618976660 1647747444 1662005940 1701577510 1922372018 1939006930 1989028468 2027650380 2041893012 2059684305 2131101930 2326808316 2382208514 2428464990 2486285585 2552366265 2746245740 2883558027 2908510395 2983542702 3403155020 3480799819 3573312771 3844744036 3878013860 4119368610 4262203860 4764417028 4805930045 4856929980 4972571170 5104732530 5767116054 5817020790 5955521285 5967085404 6961599638 7146625542 7316783293 7458856755 8238737220 8337729799 9611860090 9945142340 10209465060 10442399457 11534232108 11634041580 11911042570 13923199276 14293251084 14417790135 14633566586 14917713510 16675459598 17403999095 17866563855 19223720180 20884798914 21950349879 23822085140 25013189397 28835580270 29267133172 29835427020 33350919196 34807998190 35733127710 36583916465 41688648995 41769597828 43900699758 50026378794 51217483051 52211997285 57671160540 69615996380 71466255420 73167832930 83377297990 87801399516 100052757588 102434966102 104423994570 109751749395 125065946985 146335665860 153652449153 166754595980 204869932204 208847989140 219503498790 250131893970 256087415255 307304898306 358522381357 439006997580 500263787940 512174830510 614609796612 717044762714 768262245765 1024349661020 1075567144071 1434089525428 1536524491530 1792611906785 2151134288142 3073048983060 3585223813570 4302268576284 5377835720355 7170447627140 10755671440710 21511342881420
• Sum of all divisors σ(n): 72630236525616
• Sum of proper divisors (its aliquot sum) s(n): 51118893644196
• 21511342881420 is an abundant number, because the sum of its proper divisors (51118893644196) is greater than itself. Its abundance is 29607550762776

Bases of 21511342881420

• Binary: 100111001000001111111111100110111101010001100₂
• Hexadecimal: 0x13907FF37A8C
• Base-36: 7MI6A585O

Squares and roots of 21511342881420

• 21511342881420 squared (21511342881420²) is 462737872562018908181216400
• 21511342881420 cubed (21511342881420³) is 9954113040900420577967450005496559288000
• The square root of 21511342881420 is 4638032.2208259831
• The cube root of 21511342881420 is 27811.3779838461

Scales and comparisons

• 21,511,342,881,420 seconds is equal to 683,994 years, 8 weeks, 3 days, 22 hours, 37 minutes.
• To count from 1 to 21,511,342,881,420 would take you about one million, seven hundred nine thousand, nine hundred eighty-five 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 21511342881420 cubic inches would be around 2317.6 feet tall.

Recreational maths with 21511342881420

• 21511342881420 backwards is 02418824311512
• 21511342881420 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21511342881420's digits is 42
• More coming soon!