21312390734395215

Names of 21312390734395215

• Cardinal: 21312390734395215 can be written as Twenty-one quadrillion, three hundred twelve trillion, three hundred ninety billion, seven hundred thirty-four million, three hundred ninety-five thousand, two hundred fifteen.

Scientific notation

• Scientific notation: 2.1312390734395215 × 10¹⁶

Factors of 21312390734395215

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 493591

Divisors of 21312390734395215

• Number of divisors d(n): 320
• Complete list of divisors:
  1 3 5 7 13 15 19 21 35 39 49 57 65 91 95 105 133 147 195 245 247 273 285 343 399 455 637 665 735 741 931 1029 1235 1365 1715 1729 1911 1995 2401 2793 3185 3705 4459 4655 4903 5145 5187 6517 7203 8645 9555 12005 12103 13377 13965 14709 19551 22295 24515 25935 31213 32585 34321 36015 36309 45619 60515 63739 66885 73545 84721 93157 93639 97755 102963 136857 156065 171605 181545 191217 228095 240247 254163 279471 318695 423605 446173 465785 468195 488641 514815 593047 652099 684285 720741 956085 1201235 1211041 1270815 1338519 1397355 1465923 1681729 1779141 1956297 2230865 2443205 2965235 3123211 3260495 3420487 3603705 3633123 4564693 5045187 6055205 6352333 6692595 7329615 8408645 8477287 8895705 9284179 9369633 9781485 10261461 11772103 13694079 15616055 17102435 18165615 19056999 21862477 22823465 23943409 25225935 25431861 27852537 31761665 31952851 35316309 42386435 44466331 46420895 46848165 51307305 58860515 59341009 64989253 65587431 68470395 71830227 95284995 95858553 109312385 119717045 120694327 127159305 133398993 139262685 153037339 159764255 167603863 176581545 178023027 194967759 222331655 223669957 296705045 311264317 324946265 327937155 359151135 362082981 415387063 454924771 459112017 479292765 502811589 603471635 666994965 671009871 765186695 838019315 844860289 890115135 933792951 974838795 1118349785 1173227041 1246161189 1364774313 1556321585 1810414905 2076935315 2178850219 2274623855 2295560085 2395806823 2514057945 2534580867 2907709441 3184473397 3355049355 3519681123 4224301445 4668964755 5866135205 5914022023 6230805945 6536550657 6823871565 7187420469 8723128323 9553420191 10894251095 11979034115 12672904335 14538547205 15251951533 15922366985 16770647761 17598405615 17742066069 22291313779 29570110115 31145488699 32682753285 35937102345 41398154161 43615641615 45520329637 45755854599 47767100955 50311943283 66873941337 76259757665 83853238805 88710330345 93436466097 111456568895 117394534327 124194462483 136560988911 155727443495 206990770805 218018420893 227601648185 228779272995 251559716415 289787079127 318642307459 334369706685 352183602981 467182330485 586972671635 591764285281 620972312415 654055262679 682804944555 821761740289 869361237381 955926922377 1090092104465 1448935395635 1526128946251 1593211537295 1760918014905 1775292855843 2230496152213 2465285220867 2958821426405 3270276313395 4108808701445 4142349996967 4346806186905 4578386838753 4779634611885 5752332182023 6691488456639 7630644731255 8876464279215 10682902623757 11152480761065 12326426104335 12427049990901 15613473065491 17256996546069 20711749984835 22891934193765 28761660910115 28996449978769 32048707871271 33457442283195 46840419196473 53414513118785 62135249954505 74780318366299 78067365327455 86284982730345 86989349936307 109294311458437 144982249893845 160243539356355 202975149851383 224340955098897 234202095982365 327882934375311 373901591831495 434946749681535 546471557292185 608925449554149 1014875749256915 1121704775494485 1420826048959681 1639414671876555 3044627247770745 4262478146879043 7104130244798405 21312390734395215
• Sum of all divisors σ(n): 45104890862760960
• Sum of proper divisors (its aliquot sum) s(n): 23792500128365745
• 21312390734395215 is an abundant number, because the sum of its proper divisors (23792500128365745) is greater than itself. Its abundance is 2480109393970530

Bases of 21312390734395215

• Binary: 1001011101101111000000110100111000010011011011101001111₂
• Hexadecimal: 0x4BB781A709B74F
• Base-36: 5TUM151MXCF

Squares and roots of 21312390734395215

• 21312390734395215 squared (21312390734395215²) is 454217998815535011764031814896225
• 21312390734395215 cubed (21312390734395215³) is 9680471469351745126374214315949830695303361563375
• The square root of 21312390734395215 is 145987638.9780833977
• The cube root of 21312390734395215 is 277253.7251071865

Scales and comparisons

• 21,312,390,734,395,215 seconds is equal to 677,668,101 years, 41 weeks, 4 days, 12 hours, 15 seconds.
• To count from 1 to 21,312,390,734,395,215 would take you about two billion, thirty-three million, four thousand, three hundred 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 21312390734395215 cubic inches would be around 23104.5 feet tall.

Recreational maths with 21312390734395215

• 21312390734395215 backwards is 51259343709321312
• The number of decimal digits it has is: 17
• The sum of 21312390734395215's digits is 60
• More coming soon!