21138182532957438

Names of 21138182532957438

• Cardinal: 21138182532957438 can be written as Twenty-one quadrillion, one hundred thirty-eight trillion, one hundred eighty-two billion, five hundred thirty-two million, nine hundred fifty-seven thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1138182532957438 × 10¹⁶

Factors of 21138182532957438

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3746697

Divisors of 21138182532957438

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 9 13 18 26 27 39 54 78 117 234 351 613 702 1226 1839 3678 5517 7969 11034 13159 15938 16551 23907 26318 33102 39477 47814 71721 78954 118431 143442 171067 215163 236862 342134 355293 430326 513201 710586 1026402 1539603 3079206 3732907 4618809 7465814 8066467 9237618 11198721 16132934 22397442 24199401 33596163 48398802 48527791 67192326 72598203 97055582 100788489 104864071 145196406 145583373 201576978 209728142 217794609 291166746 314592213 435589218 436750119 629184426 873500238 943776639 1310250357 1887553278 2288271991 2620500714 2831329917 4576543982 5662659834 6864815973 13729631946 20594447919 29747535883 41188895838 49121323213 59495071766 61783343757 89242607649 98242646426 123566687514 147363969639 178485215298 267727822947 294727939278 442091908917 535455645894 638577201769 803183468841 884183817834 1277154403538 1326275726751 1606366937682 1915731605307 2652551453502 3831463210614 5747194815921 11494389631842 17241584447763 30111371129569 34483168895526 60222742259138 90334113388707 180668226777414 271002340166121 391447824684397 542004680332242 782895649368794 813007020498363 1174343474053191 1626014040996726 2348686948106382 3523030422159573 7046060844319146 10569091266478719 21138182532957438
• Sum of all divisors σ(n): 50673491463705600
• Sum of proper divisors (its aliquot sum) s(n): 29535308930748162
• 21138182532957438 is an abundant number, because the sum of its proper divisors (29535308930748162) is greater than itself. Its abundance is 8397126397790724

Bases of 21138182532957438

• Binary: 1001011000110010001000010100101000100110000010011111110₂
• Hexadecimal: 0x4B1910A51304FE
• Base-36: 5S4UYZWF8JI

Squares and roots of 21138182532957438

• 21138182532957438 squared (21138182532957438²) is 446822760796626929439062719523844
• 21138182532957438 cubed (21138182532957438³) is 9445021077599078854841193030359611930348478151672
• The square root of 21138182532957438 is 145389760.7569303279
• The cube root of 21138182532957438 is 276496.2303100731

Scales and comparisons

• 21,138,182,532,957,438 seconds is equal to 672,128,819 years, 44 weeks, 3 days, 17 hours, 57 minutes, 18 seconds.
• To count from 1 to 21,138,182,532,957,438 would take you about two billion, sixteen million, three hundred eighty-six thousand, four 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 21138182532957438 cubic inches would be around 23041.4 feet tall.

Recreational maths with 21138182532957438

• 21138182532957438 backwards is 83475923528183112
• The number of decimal digits it has is: 17
• The sum of 21138182532957438's digits is 72
• More coming soon!