21368813013166428

Names of 21368813013166428

• Cardinal: 21368813013166428 can be written as Twenty-one quadrillion, three hundred sixty-eight trillion, eight hundred thirteen billion, thirteen million, one hundred sixty-six thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1368813013166428 × 10¹⁶

Factors of 21368813013166428

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2198

Divisors of 21368813013166428

• Number of divisors d(n): 378
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 79 81 108 158 162 237 243 316 324 474 486 711 729 948 972 1051 1063 1422 1458 2102 2126 2133 2844 2916 3153 3189 4204 4252 4266 6241 6306 6378 6399 8532 9459 9567 12482 12612 12756 12798 18723 18918 19134 19197 24964 25596 28377 28701 37446 37836 38268 38394 56169 56754 57402 57591 74892 76788 83029 83977 85131 86103 112338 113508 114804 115182 166058 167954 168507 170262 172206 224676 230364 249087 251931 255393 258309 332116 335908 337014 340524 344412 498174 503862 505521 510786 516618 674028 747261 755793 766179 774927 996348 1007724 1011042 1021572 1033236 1104601 1117213 1494522 1511586 1516563 1532358 1549854 2022084 2209202 2234426 2241783 2267379 2989044 3023172 3033126 3064716 3099708 3313803 3351639 4418404 4468852 4483566 4534758 4549689 6066252 6559291 6627606 6634183 6703278 6725349 6802137 8967132 9069516 9099378 9941409 10054917 13118582 13255212 13268366 13406556 13450698 13604274 18198756 19677873 19882818 19902549 20109834 20176047 20406411 26237164 26536732 26901396 27208548 29824227 30164751 39355746 39765636 39805098 40219668 40352094 40812822 59033619 59648454 59707647 60329502 60528141 61219233 78711492 79610196 80704188 81625644 87263479 88259827 89472681 90494253 118067238 119296908 119415294 120659004 121056282 122438466 174526958 176519654 177100857 178945362 179122941 180988506 236134476 238830588 242112564 244876932 261790437 264779481 268418043 271482759 349053916 353039308 354201714 357890724 358245882 361977012 523580874 529558962 531302571 536836086 537368823 542965518 708403428 716491764 785371311 794338443 805254129 814448277 1047161748 1059117924 1062605142 1073672172 1074737646 1085931036 1174190863 1570742622 1588676886 1593907713 1610508258 1612106469 1628896554 2125210284 2149475292 2348381726 2356113933 2383015329 3141485244 3177353772 3187815426 3221016516 3224212938 3257793108 3522572589 4696763452 4712227866 4766030658 4781723139 4836319407 6375630852 6448425876 6893814841 6972526333 7045145178 7068341799 7149045987 9424455732 9532061316 9563446278 9672638814 10567717767 13787629682 13945052666 14090290356 14136683598 14298091974 19126892556 19345277628 20681444523 20917578999 21135435534 21205025397 21447137961 27575259364 27890105332 28273367196 28596183948 31703153301 41362889046 41835157998 42270871068 42410050794 42894275922 62044333569 62752736997 63406306602 63615076191 64341413883 82725778092 83670315996 84820101588 85788551844 92761078177 95109459903 124088667138 125505473994 126812613204 127230152382 128682827766 185522156354 186133000707 188258210991 190218919806 248177334276 251010947988 254460304764 257365655532 278283234531 285328379709 371044312708 372266001414 376516421982 380437839612 556566469062 558399002121 564774632973 570656759418 744532002828 753032843964 834849703593 855985139127 1113132938124 1116798004242 1129549265946 1141313518836 1669699407186 1675197006363 1694323898919 1711970278254 2233596008484 2259098531892 2504549110779 3339398814372 3350394012726 3388647797838 3423940556508 5009098221558 5025591019089 5082971696757 6700788025452 6777295595676 7328125175983 7513647332337 10018196443116 10051182038178 10165943393514 14656250351966 15027294664674 20102364076356 20331886787028 21984375527949 22540941997011 29312500703932 30054589329348 43968751055898 45081883994022 65953126583847 67622825991033 87937502111796 90163767988044 131906253167694 135245651982066 197859379751541 263812506335388 270491303964132 395718759503082 593578139254623 791437519006164 1187156278509246 1780734417763869 2374312557018492 3561468835527738 5342203253291607 7122937671055476 10684406506583214 21368813013166428
• Sum of all divisors σ(n): 56893738054675032
• Sum of proper divisors (its aliquot sum) s(n): 35524925041508604
• 21368813013166428 is an abundant number, because the sum of its proper divisors (35524925041508604) is greater than itself. Its abundance is 14156112028342176

Bases of 21368813013166428

• Binary: 1001011111010101101001001111100111010111110100101011100₂
• Hexadecimal: 0x4BEAD27CEBE95C
• Base-36: 5UEM16DMXR0

Squares and roots of 21368813013166428

• 21368813013166428 squared (21368813013166428²) is 456626169591670875793282826279184
• 21368813013166428 cubed (21368813013166428³) is 9757559234922836887217411356700569904433384034752
• The square root of 21368813013166428 is 146180754.5922732881
• The cube root of 21368813013166428 is 277498.1760588563

Scales and comparisons

• 21,368,813,013,166,428 seconds is equal to 679,462,155 years, 38 weeks, 3 days, 10 hours, 13 minutes, 48 seconds.
• To count from 1 to 21,368,813,013,166,428 would take you about two billion, thirty-eight million, three hundred eighty-six thousand, four hundred sixty-seven 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 21368813013166428 cubic inches would be around 23124.8 feet tall.

Recreational maths with 21368813013166428

• 21368813013166428 backwards is 82466131031886312
• The number of decimal digits it has is: 17
• The sum of 21368813013166428's digits is 63
• More coming soon!