21181243965440

Names of 21181243965440

• Cardinal: 21181243965440 can be written as Twenty-one trillion, one hundred eighty-one billion, two hundred forty-three million, nine hundred sixty-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.118124396544 × 10¹³

Factors of 21181243965440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 537604

Divisors of 21181243965440

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 37 40 52 64 65 74 80 104 128 130 148 160 185 208 256 260 296 320 370 416 481 512 520 592 640 740 832 962 1024 1040 1184 1280 1480 1664 1924 2048 2080 2368 2405 2560 2960 3328 3848 4096 4160 4736 4810 5120 5920 6656 7696 8192 8320 9472 9620 10240 11840 13312 15392 16384 16640 18944 19240 20480 23680 26624 30784 33280 37888 38480 40960 47360 53248 61568 66560 75776 76960 81920 94720 106496 123136 133120 151552 153920 189440 212992 246272 266240 303104 307840 378880 492544 532480 537547 606208 615680 757760 985088 1064960 1075094 1231360 1515520 1970176 2150188 2462720 2687735 3031040 3940352 4300376 4925440 5375470 6988111 7880704 8600752 9850880 10750940 13976222 17201504 19701760 19889239 21501880 27952444 34403008 34940555 39403520 39778478 43003760 55904888 68806016 69881110 79556956 86007520 99446195 111809776 137612032 139762220 159113912 172015040 198892390 223619552 258560107 275224064 279524440 318227824 344030080 397784780 447239104 517120214 550448128 559048880 636455648 688060160 795569560 894478208 1034240428 1100896256 1118097760 1272911296 1292800535 1376120320 1591139120 1788956416 2068480856 2201792512 2236195520 2545822592 2585601070 2752240640 3182278240 3577912832 4136961712 4403585024 4472391040 5091645184 5171202140 5504481280 6364556480 7155825664 8273923424 8807170048 8944782080 10183290368 10342404280 11008962560 12729112960 14311651328 16547846848 17889564160 20366580736 20684808560 22017925120 25458225920 28623302656 33095693696 35779128320 40733161472 41369617120 44035850240 50916451840 57246605312 66191387392 71558256640 81466322944 82739234240 101832903680 114493210624 132382774784 143116513280 162932645888 165478468480 203665807360 264765549568 286233026560 325865291776 330956936960 407331614720 529531099136 572466053120 661913873920 814663229440 1059062198272 1323827747840 1629326458880 2118124396544 2647655495680 4236248793088 5295310991360 10590621982720 21181243965440
• Sum of all divisors σ(n): 56223362328672
• Sum of proper divisors (its aliquot sum) s(n): 35042118363232
• 21181243965440 is an abundant number, because the sum of its proper divisors (35042118363232) is greater than itself. Its abundance is 13860874397792

Bases of 21181243965440

• Binary: 100110100001110100100100001011100000000000000₂
• Hexadecimal: 0x1343A485C000
• Base-36: 7IAJ1RUGW

Squares and roots of 21181243965440

• 21181243965440 squared (21181243965440²) is 448645095923488415914393600
• 21181243965440 cubed (21181243965440³) is 9502861230653638953540494299636957184000
• The square root of 21181243965440 is 4602308.5473966215
• The cube root of 21181243965440 is 27668.3856783695

Scales and comparisons

• 21,181,243,965,440 seconds is equal to 673,498 years, 2 weeks, 15 hours, 17 minutes, 20 seconds.
• To count from 1 to 21,181,243,965,440 would take you about one million, six hundred eighty-three thousand, seven hundred forty-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 21181243965440 cubic inches would be around 2305.7 feet tall.

Recreational maths with 21181243965440

• 21181243965440 backwards is 04456934218112
• The number of decimal digits it has is: 14
• The sum of 21181243965440's digits is 50
• More coming soon!