21664917724037931

Names of 21664917724037931

• Cardinal: 21664917724037931 can be written as Twenty-one quadrillion, six hundred sixty-four trillion, nine hundred seventeen billion, seven hundred twenty-four million, thirty-seven thousand, nine hundred thirty-one.

Scientific notation

• Scientific notation: 2.1664917724037931 × 10¹⁶

Factors of 21664917724037931

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 816

Divisors of 21664917724037931

• Number of divisors d(n): 240
• Complete list of divisors:
  1 3 7 9 21 27 63 81 97 189 243 291 567 679 709 729 873 1701 2037 2127 2187 2619 4963 5103 6111 6381 6561 7857 9409 14889 15309 18333 19143 19683 23571 28227 44667 45927 54999 57429 59049 65863 68773 70713 84681 134001 137781 164997 172287 177147 197589 206319 212139 254043 402003 413343 481411 494991 516861 531441 592767 618957 636417 762129 912673 1206009 1240029 1444233 1484973 1550583 1594323 1778301 1856871 1909251 2286387 2738019 3618027 3720087 4332699 4454919 4651749 4782969 5334903 5570613 5727753 6388711 6670981 6859161 8214057 10854081 11160261 12998097 13364757 13955247 16004709 16711839 17183259 19166133 20012943 20577483 24642171 32562243 33480783 38994291 40094271 41865741 46696867 48014127 50135517 51549777 57498399 60038829 61732449 73926513 97686729 116982873 120282813 125597223 140090601 144042381 150406551 154649331 172495197 180116487 185197347 221779539 293060187 350948619 360848439 376791669 420271803 432127143 451219653 463947993 517485591 540349461 555592041 647085157 665338617 879180561 1052845857 1082545317 1130375007 1260815409 1296381429 1353658959 1552456773 1621048383 1666776123 1941255471 1996015851 2637541683 3158537571 3247635951 3391125021 3782446227 3889144287 4060976877 4529596099 4657370319 4863145149 5000328369 5823766413 5988047553 7912625049 9475612713 11347338681 11667432861 12182930631 13588788297 13972110957 14589435447 15000985107 17471299239 17964142659 23737875147 28426838139 34042016043 35002298583 36548791893 40766364891 41916332871 43768306341 45002955321 52413897717 53892427977 85280514417 102126048129 105006895749 109646375679 122299094673 125748998613 131304919023 157241693151 161677283931 255841543251 306378144387 315020687247 328939127037 366897284019 377246995839 393914757069 471725079453 485031851793 767524629753 919134433161 1100691852057 1131740987517 1181744271207 1415175238359 1455095555379 2302573889259 2757403299483 3302075556171 3395222962551 3545232813621 4245525715077 4365286666137 8272209898449 9906226668513 10185668887653 10635698440863 12736577145231 24816629695347 29718680005539 30557006662959 31907095322589 38209731435693 74449889086041 89156040016617 114629194307079 223349667258123 267468120049851 343887582921237 802404360149553 1031662748763711 2407213080448659 3094988246291133 7221639241345977 21664917724037931
• Sum of all divisors σ(n): 37579658543627200
• Sum of proper divisors (its aliquot sum) s(n): 15914740819589269
• 21664917724037931 is a deficient number, because the sum of its proper divisors (15914740819589269) is less than itself. Its deficiency is 5750176904448662

Bases of 21664917724037931

• Binary: 1001100111110000010000010111101000001111000001100101011₂
• Hexadecimal: 0x4CF820BD07832B
• Base-36: 5XBKLSXAJOR

Squares and roots of 21664917724037931

• 21664917724037931 squared (21664917724037931²) is 469368659989332884164379526760761
• 21664917724037931 cubed (21664917724037931³) is 10168833400910831275710960324411182376457526425491
• The square root of 21664917724037931 is 147190073.4561877003
• The cube root of 21664917724037931 is 278774.0522549301

Scales and comparisons

• 21,664,917,724,037,931 seconds is equal to 688,877,369 years, 32 weeks, 6 days, 17 hours, 38 minutes, 51 seconds.
• To count from 1 to 21,664,917,724,037,931 would take you about two billion, sixty-six million, six hundred thirty-two thousand, one hundred eight 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 21664917724037931 cubic inches would be around 23231.2 feet tall.

Recreational maths with 21664917724037931

• 21664917724037931 backwards is 13973042771946612
• The number of decimal digits it has is: 17
• The sum of 21664917724037931's digits is 72
• More coming soon!