21371238018

Names of 21371238018

• Cardinal: 21371238018 can be written as Twenty-one billion, three hundred seventy-one million, two hundred thirty-eight thousand and eighteen.

Scientific notation

• Scientific notation: 2.1371238018 × 10¹⁰

Factors of 21371238018

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 783

Divisors of 21371238018

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 9 13 18 26 27 29 39 53 54 58 78 87 106 117 159 174 234 261 318 351 377 477 522 683 689 702 754 783 841 954 1131 1366 1378 1431 1537 1566 1682 2049 2067 2262 2523 2862 3074 3393 4098 4134 4611 5046 6147 6201 6786 7569 8879 9222 10179 10933 12294 12402 13833 15138 17758 18441 18603 19807 19981 20358 21866 22707 26637 27666 32799 36199 36882 37206 39614 39962 41499 44573 45414 53274 59421 59943 65598 72398 79911 82998 89146 98397 108597 118842 119886 133719 159822 178263 179829 196794 217194 239733 257491 267438 295191 325791 356526 359658 401157 470587 479466 514982 534789 539487 574403 579449 590382 651582 772473 802314 941174 977373 1049771 1069578 1078974 1148806 1158898 1203471 1411761 1544946 1723209 1738347 1954746 2099542 2317419 2406942 2823522 3149313 3446418 3476694 4235283 4634838 5169627 5215041 6298626 6952257 7467239 8470566 9447939 10339254 10430082 12705849 13647023 13904514 14934478 15508881 15645123 18895878 22401717 25411698 27294046 28343817 30443359 31017762 31290246 40941069 44803434 56687634 60886718 67205151 81882138 91330077 122823207 134410302 182660154 201615453 245646414 273990231 368469621 395763667 403230906 547980462 736939242 791527334 821970693 1187291001 1643941386 2374582002 3561873003 7123746006 10685619009 21371238018
• Sum of all divisors σ(n): 54047710080
• Sum of proper divisors (its aliquot sum) s(n): 32676472062
• 21371238018 is an abundant number, because the sum of its proper divisors (32676472062) is greater than itself. Its abundance is 11305234044

Bases of 21371238018

• Binary: 10011111001110100110011011010000010₂
• Hexadecimal: 0x4F9D33682
• Base-36: 9TFVSSI

Squares and roots of 21371238018

• 21371238018 squared (21371238018²) is 456729814422008568324
• 21371238018 cubed (21371238018³) is 9760881573929714211287619341832
• The square root of 21371238018 is 146189.0488990197
• The cube root of 21371238018 is 2775.0867280417

Scales and comparisons

• 21,371,238,018 seconds is equal to 679 years, 28 weeks, 7 hours, 18 seconds.
• To count from 1 to 21,371,238,018 would take you about one thousand, three hundred fifty-nine 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 21371238018 cubic inches would be around 231.3 feet tall.

Recreational maths with 21371238018

• 21371238018 backwards is 81083217312
• The number of decimal digits it has is: 11
• The sum of 21371238018's digits is 36
• More coming soon!