21381312078540

Names of 21381312078540

• Cardinal: 21381312078540 can be written as Twenty-one trillion, three hundred eighty-one billion, three hundred twelve million, seventy-eight thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.138131207854 × 10¹³

Factors of 21381312078540

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 31177

Divisors of 21381312078540

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 37 38 43 45 57 60 74 76 86 90 95 111 114 127 129 148 171 172 180 185 190 215 222 228 254 258 285 333 342 370 380 381 387 430 444 508 516 555 570 635 645 666 684 703 740 762 774 817 855 860 1110 1140 1143 1270 1290 1332 1406 1524 1548 1591 1634 1665 1710 1905 1935 2109 2220 2286 2413 2451 2540 2580 2812 3182 3268 3330 3420 3515 3810 3870 4085 4218 4572 4699 4773 4826 4902 5461 5715 6327 6364 6660 7030 7239 7353 7620 7740 7955 8170 8436 9398 9546 9652 9804 10545 10922 11430 12065 12255 12654 14060 14097 14319 14478 14706 15910 16340 16383 18796 19092 21090 21717 21844 22860 23495 23865 24130 24510 25308 27305 28194 28638 28956 29412 30229 30941 31635 31820 32766 36195 36765 42180 42291 43434 46990 47730 48260 49020 49149 54610 56388 57276 60458 61882 63270 65532 70485 71595 72390 73530 81915 84582 86868 89281 90687 92823 93980 95460 98298 103759 108585 109220 120916 123764 126540 140970 143190 144780 147060 151145 154705 163830 169164 178562 181374 185646 196596 202057 207518 211455 217170 245745 267843 272061 278469 281940 286380 302290 309410 311277 327660 357124 362748 371292 404114 415036 422910 434340 446405 453435 464115 491490 518795 535686 544122 556938 587879 604580 606171 618820 622554 803529 808228 845820 892810 906870 928230 933831 982980 1010285 1037590 1071372 1088244 1113876 1144817 1175758 1212342 1245108 1330463 1339215 1360305 1392345 1556385 1607058 1763637 1785620 1813740 1818513 1856460 1867662 2020570 2075180 2289634 2351516 2424684 2660926 2678430 2720610 2784690 2939395 3030855 3112770 3214116 3434451 3527274 3637026 3735324 3839083 3929507 3991389 4017645 4041140 4579268 4669155 5290911 5321852 5356860 5441220 5569380 5724085 5878790 6061710 6225540 6652315 6868902 7054548 7274052 7678166 7859014 7982778 8035290 8818185 9092565 9338310 10303353 10581822 11448170 11517249 11757580 11788521 11974167 12123420 13304630 13737804 15356332 15718028 15965556 16070580 17172255 17636370 18185130 18676620 19195415 19647535 19956945 20606706 21163644 21751523 22896340 23034498 23577042 23948334 25278797 26454555 26609260 34344510 34551747 35272740 35365563 36370260 38390830 39295070 39913890 41213412 43503046 46068996 47154084 47896668 49227131 50557594 51516765 52909110 57586245 58942605 59870835 65254569 68689020 69103494 70731126 74660633 75836391 76781660 78590140 79827780 87006092 98454262 101115188 103033530 105818220 108757615 115172490 117885210 119741670 126393985 130509138 138206988 141462252 145391759 147681393 149321266 151672782 168968801 172758735 176827815 195763707 196908524 206067060 217515230 223981899 227509173 230344980 235770420 239483340 246135655 252787970 261018276 290783518 295362786 298642532 303345564 326272845 337937602 345517470 353655630 373303165 379181955 391527414 435030460 436175277 443044179 447963798 455018346 492271310 505575940 506906403 581567036 590725572 652545690 671945697 675875204 691034940 707311260 726958795 738406965 746606330 758363910 783054828 844844005 872350554 886088358 895927596 910036692 935315489 978818535 984542620 1013812806 1119909495 1137545865 1305091380 1308525831 1343891394 1453917590 1476813930 1493212660 1516727820 1520719209 1689688010 1744701108 1772176716 1870630978 1957637070 2027625612 2180876385 2215220895 2239818990 2275091730 2534532015 2617051662 2687782788 2762443421 2805946467 2907835180 2953627860 3041438418 3210407219 3359728485 3379376020 3741261956 3915274140 4361752770 4430441790 4479637980 4550183460 4676577445 5069064030 5234103324 5524886842 5611892934 6082876836 6251845637 6420814438 6542629155 6719456970 7603596045 8287330263 8417839401 8723505540 8860883580 9353154890 9631221657 10138128060 11049773684 11223785868 12503691274 12841628876 13085258310 13438913940 13812217105 14029732335 15207192090 16052036095 16574660526 16835678802 18706309780 18755536911 19262443314 24861990789 25007382548 26170516620 27624434210 28059464670 28893664971 30414384180 31259228185 32104072190 33149321052 33671357604 37511073822 38524886628 41436651315 42089197005 48156108285 49723981578 55248868420 56118929340 56266610733 57787329942 62518456370 64208144380 75022147644 82873302630 84178394010 93777684555 96312216570 99447963156 112533221466 115574659884 118785067103 124309953945 125036912740 144468324855 165746605260 168356788020 187555369110 192624433140 225066442932 237570134206 248619907890 281333053665 288936649710 356355201309 375110738220 475140268412 497239815780 562666107330 577873299420 593925335515 712710402618 1069065603927 1125332214660 1187850671030 1425420805236 1781776006545 2138131207854 2375701342060 3563552013090 4276262415708 5345328019635 7127104026180 10690656039270 21381312078540
• Sum of all divisors σ(n): 72313147146240
• Sum of proper divisors (its aliquot sum) s(n): 50931835067700
• 21381312078540 is an abundant number, because the sum of its proper divisors (50931835067700) is greater than itself. Its abundance is 29550522989160

Bases of 21381312078540

• Binary: 100110111001000111001100000101110001011001100₂
• Hexadecimal: 0x13723982E2CC
• Base-36: 7KUFT5UJ0

Squares and roots of 21381312078540

• 21381312078540 squared (21381312078540²) is 457160506199920495128531600
• 21381312078540 cubed (21381312078540³) is 9774691453043820638479369928854071864000
• The square root of 21381312078540 is 4623993.0880722561
• The cube root of 21381312078540 is 27755.2270341045

Scales and comparisons

• 21,381,312,078,540 seconds is equal to 679,859 years, 30 weeks, 3 days, 19 hours, 9 minutes.
• To count from 1 to 21,381,312,078,540 would take you about one million, six hundred ninety-nine thousand, six hundred forty-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 21381312078540 cubic inches would be around 2312.9 feet tall.

Recreational maths with 21381312078540

• 21381312078540 backwards is 04587021318312
• 21381312078540 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21381312078540's digits is 45
• More coming soon!