20991381888015

Names of 20991381888015

• Cardinal: 20991381888015 can be written as Twenty trillion, nine hundred ninety-one billion, three hundred eighty-one million, eight hundred eighty-eight thousand and fifteen.

Scientific notation

• Scientific notation: 2.0991381888015 × 10¹³

Factors of 20991381888015

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 244

Divisors of 20991381888015

• Number of divisors d(n): 672
• Complete list of divisors:
  1 3 5 7 9 11 15 21 27 33 35 45 49 55 63 77 79 81 99 105 135 139 147 165 189 231 237 243 245 297 315 343 385 395 405 417 441 495 539 553 567 693 695 711 729 735 869 891 945 973 1029 1155 1185 1215 1251 1323 1485 1529 1617 1659 1701 1715 2079 2085 2133 2205 2607 2673 2695 2765 2835 2919 3087 3465 3555 3645 3753 3773 3871 3969 4345 4455 4587 4851 4865 4977 5103 5145 6083 6237 6255 6399 6615 6811 7645 7821 8019 8085 8295 8505 8757 9261 10395 10665 10703 10981 11259 11319 11613 11907 13035 13365 13761 14553 14595 14931 15435 18249 18711 18765 18865 19197 19321 19355 19845 20433 22935 23463 24255 24885 25515 26271 27097 27783 30415 31185 31995 32109 32943 33777 33957 34055 34839 35721 39105 40095 41283 42581 43659 43785 44793 46305 47677 53515 54747 54905 56133 56295 56595 57591 57963 58065 59535 61299 68805 70389 72765 74655 74921 76867 78813 81291 83349 91245 93555 95985 96327 96605 98829 101331 101871 102165 104517 117315 120791 123849 127743 130977 131355 134379 135247 135485 138915 143031 160545 164241 164715 168885 169785 173889 174195 178605 183897 206415 211167 212531 212905 218295 223965 224763 230601 236439 238385 243873 250047 273735 280665 287955 288981 289815 296487 298067 305613 306495 313551 351945 362373 371547 374605 383229 384335 392931 394065 403137 405741 406455 416745 429093 481635 492723 494145 506655 509355 521667 522585 524447 538069 551691 603955 619245 633501 637593 638715 654885 671895 674289 676235 691803 709317 715155 731619 821205 845537 866943 869445 889461 894201 916839 919485 940653 946729 1055835 1062655 1087119 1114641 1123815 1149687 1153005 1182195 1217223 1219365 1250235 1287279 1444905 1478169 1482435 1487717 1490335 1526359 1528065 1565001 1567755 1573341 1614207 1655073 1811865 1857735 1912779 1916145 1964655 2015685 2022867 2028705 2075409 2145465 2194857 2463615 2536611 2600829 2608335 2622235 2668383 2682603 2690345 2750517 2758455 2821959 2840187 3167505 3187965 3261357 3371445 3449061 3459015 3546585 3651669 3658095 3766483 3861837 4227685 4334715 4434507 4447305 4463151 4471005 4579077 4584195 4695003 4703265 4720023 4733645 4842621 4965219 5435595 5573205 5738337 5748435 5918759 6068601 6086115 6226227 6436395 6584571 6627103 7390845 7438585 7609833 7631795 7802487 7825005 7866705 8005149 8047809 8071035 8275365 8520561 9563895 9784071 10114335 10347183 10377045 10414019 10684513 10955007 10974285 11299449 11585511 12683055 13004145 13341915 13389453 13413015 13737231 13752585 14085009 14109795 14160069 14200935 14527863 16306785 16789949 17215011 17245305 17756277 18205803 18258345 18678681 18832415 19309185 19753713 19881309 22172535 22315755 22829499 22895385 23475015 23600115 24143427 24213105 24826095 25561683 28691685 29352213 29593795 30343005 31041549 31131135 31242057 32053539 32865021 32922855 33135515 33898347 34756533 38049165 39012435 40025745 40168359 40239045 41211693 41431313 42480207 42602805 43583589 48920355 50369847 51645033 51735915 52070095 53268831 53422565 54617409 54775035 56036043 56497245 57927555 59643927 66947265 68488497 68686155 70425045 70800345 72430281 72639315 72898133 74791591 76685049 83949745 86075055 88056639 88781385 91029015 93393405 93726171 96160617 98595063 98768565 99406545 101695041 114147495 117529643 120505077 120717135 123635079 124293939 127440621 127808415 130750767 146761065 151109541 154935099 155207745 156210285 159806493 160267695 164325105 169491735 173782665 178931781 200841795 205465491 206058465 207156565 212401035 217290843 217917945 218694399 224374773 230055147 251849235 258225165 266344155 273087045 280180215 281178513 288481851 298219635 305085123 342442485 352588929 361515231 362151405 364490665 370905237 372881817 373957955 382321863 383425245 392252301 440283195 453328623 468630855 479419479 480803085 492975315 508475205 523541137 536795343 587648215 602525385 616396473 618175395 621469695 637203105 653753835 656083197 673124319 690165441 755547705 774675495 799032465 822707501 843535539 865445553 894658905 915255369 1027327455 1057766787 1084545693 1086454215 1093471995 1112715711 1118645451 1121873865 1150275735 1359985869 1405892565 1438258437 1442409255 1525425615 1570623411 1610386029 1762944645 1807576155 1854526185 1864409085 1911609315 1961261505 1968249591 2019372957 2266643115 2397097395 2468122503 2530606617 2596336659 2617705685 2683976715 2745766107 3081982365 3173300361 3280415985 3355936353 3365621595 3450827205 4079957607 4113537505 4217677695 4314775311 4327227765 4576276845 4711870233 4831158087 5288833935 5422728465 5563578555 5593227255 5758952507 5904748773 6058118871 6799929345 7191292185 7404367509 7591819851 7789009977 7853117055 8051930145 9519901083 9841247955 10067809059 10096864785 12239872821 12340612515 12653033085 12981683295 13728830535 14135610699 15866501805 16779681765 17276857521 17714246319 18174356613 20399788035 21573876555 22213102527 23559351165 24155790435 28559703249 28794762535 29523743865 30203427177 30290594355 37021837545 37959099255 38945049885 42406832097 47599505415 50339045295 51830572563 53142738957 54523069839 61199364105 66639307581 70678053495 85679109747 86384287605 88571231595 90871783065 111065512635 127220496291 142798516245 151017135885 155491717689 199917922743 212034160485 259152862815 265713694785 272615349195 333196537905 381661488873 428395548735 466475153067 599753768229 636102481455 777458588445 999589613715 1399425459201 1908307444365 2332375765335 2998768841145 4198276377603 6997127296005 20991381888015
• Sum of all divisors σ(n): 49008091392000
• Sum of proper divisors (its aliquot sum) s(n): 28016709503985
• 20991381888015 is an abundant number, because the sum of its proper divisors (28016709503985) is greater than itself. Its abundance is 7025327615970

Bases of 20991381888015

• Binary: 100110001011101101111110111000101110000001111₂
• Hexadecimal: 0x13176FDC5C0F
• Base-36: 7FVB2SLXR

Squares and roots of 20991381888015

• 20991381888015 squared (20991381888015²) is 440638113568484186000640225
• 20991381888015 cubed (20991381888015³) is 9249602916330575561331789638259254403375
• The square root of 20991381888015 is 4581635.2853555465
• The cube root of 20991381888015 is 27585.4671652719

Scales and comparisons

• 20,991,381,888,015 seconds is equal to 667,461 years, 4 days, 21 hours, 20 minutes, 15 seconds.
• To count from 1 to 20,991,381,888,015 would take you about one million, six hundred sixty-eight thousand, six hundred fifty-two 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 20991381888015 cubic inches would be around 2298.8 feet tall.

Recreational maths with 20991381888015

• 20991381888015 backwards is 51088818319902
• 20991381888015 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20991381888015's digits is 63
• More coming soon!