21080987971890

Names of 21080987971890

• Cardinal: 21080987971890 can be written as Twenty-one trillion, eighty billion, nine hundred eighty-seven million, nine hundred seventy-one thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.108098797189 × 10¹³

Factors of 21080987971890

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2604

Divisors of 21080987971890

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 5 6 7 10 11 14 15 21 22 23 30 33 35 42 43 46 55 66 69 70 77 86 105 110 115 121 129 138 154 161 165 210 215 230 231 242 253 258 301 322 330 345 363 385 397 430 462 473 483 506 602 605 645 690 726 759 770 794 805 847 903 946 966 989 1155 1191 1210 1265 1290 1419 1505 1518 1610 1694 1771 1806 1815 1978 1985 2113 2310 2365 2382 2415 2530 2541 2779 2783 2838 2967 3010 3311 3542 3630 3795 3970 4226 4235 4367 4515 4730 4830 4945 5082 5203 5313 5558 5566 5934 5955 6339 6622 6923 7095 7590 8337 8349 8470 8734 8855 9030 9131 9890 9933 10406 10565 10626 10879 11910 12678 12705 13101 13846 13895 13915 14190 14791 14835 15609 16555 16674 16698 17071 17710 18262 19481 19866 20769 21130 21758 21835 23243 25410 26015 26202 26565 27393 27790 27830 29582 29670 30569 31218 31695 32637 33110 34142 34615 36421 38962 41538 41685 41745 43670 44373 45655 46486 48037 48599 49665 51213 52030 53130 54395 54786 58443 61138 63390 63917 65274 65505 69230 69729 72842 73955 76153 78045 83370 83490 85355 88746 90859 91310 91707 96074 97198 97405 99330 100441 102426 103845 108790 109263 116215 116886 119497 119669 127834 131010 136965 139458 144111 145797 147910 152306 152845 156090 162701 163185 170710 181718 182105 183414 187781 191751 194810 200882 207690 218526 221865 228459 232430 238994 239338 240185 242995 255673 256065 272577 273930 288222 291594 292215 301323 305690 319585 325402 326370 336259 340193 348645 358491 359007 364210 375562 380765 383502 392633 443730 454295 456918 458535 480370 485990 488103 502205 511346 512130 534589 545154 546315 563343 584430 597485 598345 602646 636013 639170 672518 680386 697290 703087 716982 718014 720555 728985 761530 767019 785266 813505 837683 838861 908590 917070 938905 958755 976206 999449 1004410 1008777 1020579 1069178 1092630 1104851 1126686 1142295 1177899 1194970 1196690 1272026 1278365 1314467 1362885 1406174 1441110 1457970 1506615 1534038 1603767 1627010 1675366 1677722 1681295 1700965 1789711 1792455 1795035 1877810 1908039 1917510 1963165 1998898 2017554 2041158 2065591 2089757 2109261 2209702 2284590 2355798 2440515 2513049 2516583 2556730 2628934 2672945 2725770 2748431 2816715 2998347 3013230 3180065 3207534 3314553 3362590 3401930 3515435 3579422 3584910 3590070 3742123 3816078 3835095 3926330 3943401 4131182 4179514 4188415 4194305 4218522 4318963 4881030 4997245 5026098 5033166 5043885 5102895 5345890 5369133 5496862 5524255 5633430 5872027 5880479 5889495 5996694 6196773 6269271 6360130 6572335 6629106 6996143 7030870 7484246 7670190 7733957 7886802 8018835 8245293 8376830 8388610 8637926 8948555 9227471 9540195 9994490 10087770 10205790 10327955 10448785 10546305 10738266 10993939 11048510 11226369 11744054 11760958 11778990 12393546 12538542 12565245 12582915 12956889 13144670 13742155 13992286 14459137 14628299 14991735 15467914 16037670 16490586 16572765 17616081 17641437 17897110 18454942 18710615 19080390 19293803 19717005 20655910 20897570 20988429 21092610 21594815 21987878 22452738 22987327 23201871 25130490 25165830 25913778 26845665 27484310 27682413 28918274 29256598 29360135 29402395 29983470 30232741 30983865 31346355 32981817 33145530 34980715 35232162 35282874 36071023 37421230 38587606 38669785 39434010 41163353 41226465 41976858 43189630 43377411 43884897 45974654 46137355 46403742 47508593 53691330 54969695 55364826 56131845 57881409 58720270 58804790 60465482 61967730 62692710 64592297 64784445 65963634 68961981 69961430 72142046 72295685 73141495 76957573 77339570 82326706 82452930 86754822 87769794 88080405 88207185 90698223 92274710 95017186 96469015 101502181 104942145 108213069 109939390 112263690 114936635 115762818 116009355 123490059 129184594 129568890 135056621 137923962 138412065 142525779 144591370 146282990 151163705 153915146 160911289 164909085 176160810 176414370 180355115 181396446 192938030 193776891 203004362 205816765 209884290 212231833 216426138 216887055 219424485 229873270 230872719 232018710 237542965 246980118 252497161 252860597 270113242 276824130 285051558 289407045 302327410 304506543 321822578 322961485 329818170 332560151 344809905 360710230 384787865 387553782 396781253 405169863 411633530 424463666 433774110 438848970 453491115 461745438 475085930 482733867 504994322 505721194 507510905 541065345 578814090 609013086 617450295 636695499 645922970 665120302 675283105 689619810 710515267 712628895 757491483 758581791 769575730 793562506 804556445 810339726 829633529 906982230 965467734 968884455 997680453 1015021810 1061159165 1082130690 1154363595 1190343759 1234900590 1262485805 1264302985 1273390998 1350566210 1421030534 1425257790 1485622831 1514982966 1517163582 1522532715 1609112890 1659267058 1662800755 1770024179 1937768910 1983906265 1995360906 2025849315 2122318330 2131545801 2308727190 2334550163 2380687518 2413669335 2488900587 2524971610 2528605970 2777468771 2971245662 3045065430 3183477495 3325601510 3540048358 3552576335 3787457415 3792908955 3967812530 4051698630 4148167645 4263091602 4364593783 4456868493 4669100326 4827338670 4977801174 4988402265 5310072537 5554937542 5807434703 5951718795 6366954990 7003650489 7105152670 7428114155 7574914830 7585817910 8296335290 8332406313 8729187566 8850120895 8913736986 9125968819 9976804530 10620145074 10657729005 11614869406 11672750815 11903437590 12444502935 13093781349 13887343855 14007300978 14856228310 16341851141 16664812626 17422304109 17700241790 18251937638 21315458010 21822968915 22284342465 23345501630 24889005870 26187562698 26550362685 27377906457 27774687710 29037173515 30552156481 32683702282 34844608218 35018252445 41662031565 43645937830 44568684930 45629844095 49025553423 53100725370 54755812914 58074347030 61104312962 63881781733 65468906745 70036504890 81709255705 83324063130 87111520545 91259688190 91656469443 98051106846 100385657009 127763563466 130937813490 136889532285 152760782405 163418511410 174223041090 183312938886 191645345199 200771314018 245127767115 273779064570 301156971027 305521564810 319408908665 383290690398 458282347215 490255534230 501928285045 602313942054 638817817330 702699599063 916564694430 958226725995 1003856570090 1405399198126 1505784855135 1916453451990 2108098797189 3011569710270 3513497995315 4216197594378 7026995990630 10540493985945 21080987971890
• Sum of all divisors σ(n): 68065352441856
• Sum of proper divisors (its aliquot sum) s(n): 46984364469966
• 21080987971890 is an abundant number, because the sum of its proper divisors (46984364469966) is greater than itself. Its abundance is 25903376498076

Bases of 21080987971890

• Binary: 100110010110001001100110011001011000100110010₂
• Hexadecimal: 0x132C4CCCB132
• Base-36: 7H0GZXYR6

Squares and roots of 21080987971890

• 21080987971890 squared (21080987971890²) is 444408053870970855430172100
• 21080987971890 cubed (21080987971890³) is 9368560838264979757360202131892662269000
• The square root of 21080987971890 is 4591403.7038676961
• The cube root of 21080987971890 is 27624.6628829479

Scales and comparisons

• 21,080,987,971,890 seconds is equal to 670,310 years, 10 weeks, 6 days, 8 hours, 11 minutes, 30 seconds.
• To count from 1 to 21,080,987,971,890 would take you about one million, six hundred seventy-five thousand, seven hundred seventy-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 21080987971890 cubic inches would be around 2302.1 feet tall.

Recreational maths with 21080987971890

• 21080987971890 backwards is 09817978908012
• 21080987971890 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21080987971890's digits is 69
• More coming soon!