21138971107870

Names of 21138971107870

• Cardinal: 21138971107870 can be written as Twenty-one trillion, one hundred thirty-eight billion, nine hundred seventy-one million, one hundred seven thousand, eight hundred seventy.

Scientific notation

• Scientific notation: 2.113897110787 × 10¹³

Factors of 21138971107870

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 127

Divisors of 21138971107870

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 5 7 10 11 14 19 22 35 38 49 55 70 77 83 95 98 110 133 154 166 190 209 245 266 361 385 415 418 490 539 581 665 722 770 830 913 931 1045 1078 1162 1330 1463 1577 1805 1826 1862 2090 2527 2695 2905 2926 3154 3610 3971 4067 4565 4655 5054 5390 5810 6391 6859 6889 7315 7885 7942 8134 9130 9310 10241 11039 12635 12782 13718 13778 14630 15770 17347 17689 19855 20335 20482 22078 25270 27797 29963 31955 34295 34445 34694 35378 39710 40670 44737 48013 48223 51205 55195 55594 59926 63910 68590 68890 75449 75779 77273 86735 88445 89474 96026 96446 102410 110390 121429 130891 138985 149815 150898 151558 154546 173470 176890 194579 209741 223685 240065 241115 242858 261782 277970 299630 329593 336091 337561 377245 378895 386365 389158 419482 447370 480130 482230 528143 530453 569297 571787 607145 654455 659186 672182 675122 754490 757790 772730 850003 916237 972895 1048705 1056286 1060906 1138594 1143574 1214290 1308910 1439801 1468187 1647965 1680455 1687805 1700006 1832474 1945790 2097410 2307151 2486929 2640715 2652265 2846485 2858935 2879602 2936374 3295930 3360910 3375610 3697001 3713171 3985079 4002509 4250015 4581185 4614302 4973858 5281430 5304530 5692970 5717870 6262267 6289657 6413659 7199005 7340935 7394002 7426342 7970158 8005018 8500030 9162370 10078607 10863953 11535755 12434645 12524534 12579314 12827318 14398010 14681870 16150057 17408503 18485005 18565855 19925395 20012545 20157214 21727906 23071510 24869290 27356219 27895553 28017563 31311335 31448285 32068295 32300114 34817006 36970010 37131710 39850790 40025090 43835869 44027599 47251651 50393035 54319765 54712438 55791106 56035126 62622670 62896570 64136590 70550249 76047671 80750285 87042515 87671738 88055198 94503302 100786070 108639530 119503483 121859521 136781095 139477765 140087815 141100498 152095342 161500570 174085030 191493533 206415107 219179345 220137995 236258255 239006966 243719042 273562190 278955530 280175630 306851083 308193193 330761557 352751245 380238355 382987066 412830214 438358690 440275990 472516510 519768161 532333697 597517415 609297605 613702166 616386386 661523114 705502490 760476710 836524381 957467665 1032075535 1039536322 1064667394 1195034830 1218595210 1340454731 1444905749 1534255415 1540965965 1653807785 1673048762 1914935330 2064151070 2270566177 2315330899 2598840805 2661668485 2680909462 2889811498 3068510830 3081931930 3307615570 3638377127 3921887033 4182621905 4541132354 4630661798 5197681610 5323336970 5855670667 6702273655 7224528745 7276754254 7843774066 8365243810 10114340243 11352830885 11576654495 11711341334 13404547310 14449057490 15893963239 18191885635 19609435165 20228680486 22705661770 23153308990 25468639889 27453209231 29278353335 31787926478 36383771270 39218870330 43140757363 50571701215 50937279778 54906418462 58556706670 79469816195 86281514726 101143402430 111257742673 127343199445 137266046155 158939632390 192172464617 215703786815 222515485346 254686398890 274532092310 301985301541 384344929234 431407573630 556288713365 603970603082 960862323085 1112577426730 1509926507705 1921724646170 2113897110787 3019853015410 4227794221574 10569485553935 21138971107870
• Sum of all divisors σ(n): 51590018188800
• Sum of proper divisors (its aliquot sum) s(n): 30451047080930
• 21138971107870 is an abundant number, because the sum of its proper divisors (30451047080930) is greater than itself. Its abundance is 9312075973060

Bases of 21138971107870

• Binary: 100110011100111001100110111010010001000011110₂
• Hexadecimal: 0x1339CCDD221E
• Base-36: 7HR3XLSTA

Squares and roots of 21138971107870

• 21138971107870 squared (21138971107870²) is 446856099499362615175936900
• 21138971107870 cubed (21138971107870³) is 9446078176692508293684535325958213403000
• The square root of 21138971107870 is 4597713.6826764235
• The cube root of 21138971107870 is 27649.9668563401

Scales and comparisons

• 21,138,971,107,870 seconds is equal to 672,153 years, 46 weeks, 3 days, 10 hours, 51 minutes, 10 seconds.
• To count from 1 to 21,138,971,107,870 would take you about one million, six hundred eighty thousand, three hundred eighty-four 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 21138971107870 cubic inches would be around 2304.2 feet tall.

Recreational maths with 21138971107870

• 21138971107870 backwards is 07870117983112
• 21138971107870 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21138971107870's digits is 55
• More coming soon!