21005097646608768

Names of 21005097646608768

• Cardinal: 21005097646608768 can be written as Twenty-one quadrillion, five trillion, ninety-seven billion, six hundred forty-six million, six hundred eight thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1005097646608768 × 10¹⁶

Factors of 21005097646608768

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1967866183

Divisors of 21005097646608768

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 19 21 22 24 28 32 33 38 42 44 48 56 57 64 66 76 77 84 88 96 112 114 128 132 133 152 154 168 176 192 209 224 228 231 264 266 304 308 336 352 361 384 399 418 448 456 462 528 532 608 616 627 672 704 722 798 836 896 912 924 1056 1064 1083 1216 1232 1254 1344 1408 1444 1463 1596 1672 1824 1848 2112 2128 2166 2432 2464 2508 2527 2688 2888 2926 3192 3344 3648 3696 3971 4224 4256 4332 4389 4928 5016 5054 5776 5852 6384 6688 7296 7392 7581 7942 8512 8664 8778 9856 10032 10108 11552 11704 11913 12768 13376 14784 15162 15884 17024 17328 17556 20064 20216 23104 23408 23826 25536 26752 27797 29568 30324 31768 34656 35112 40128 40432 46208 46816 47652 51072 55594 60648 63536 69312 70224 80256 80864 83391 93632 95304 111188 121296 127072 138624 140448 161728 166782 187264 190608 222376 242592 254144 280896 323456 333564 381216 444752 485184 508288 561792 667128 762432 889504 970368 1334256 1524864 1779008 2668512 3558016 5337024 10674048 1967866141 3935732282 5903598423 7871464564 11807196846 13775062987 15742929128 21646527551 23614393692 27550125974 31485858256 37389456679 41325188961 43293055102 47228787384 55100251948 62971716512 64939582653 74778913358 82650377922 86586110204 94457574768 110200503896 112168370037 125943433024 129879165306 149557826716 151525692857 165300755844 173172220408 188915149536 220401007792 224336740074 251886866048 259758330612 261726196753 299115653432 303051385714 330601511688 346344440816 377830299072 411284023469 440802015584 448673480148 454577078571 519516661224 523452393506 598231306864 606102771428 661203023376 692688881632 710399676901 755660598144 785178590259 822568046938 881604031168 897346960296 909154157142 1039033322448 1046904787012 1196462613728 1212205542856 1233852070407 1322406046752 1385377763264 1420799353802 1570357180518 1645136093876 1763208062336 1794693920592 1818308314284 2078066644896 2093809574024 2131199030703 2392925227456 2424411085712 2467704140814 2644812093504 2770755526528 2841598707604 2878988164283 3140714361036 3290272187752 3589387841184 3636616628568 4156133289792 4187619148048 4262398061406 4785850454912 4848822171424 4935408281628 4972797738307 5289624187008 5683197415208 5757976328566 6281428722072 6580544375504 7178775682368 7273233257136 7814396445911 8312266579584 8375238296096 8524796122812 8636964492849 9697644342848 9870816563256 9945595476614 11366394830416 11515952657132 12562857444144 13161088751008 14357551364736 14546466514272 14918393214921 15628792891822 16750476592192 17049592245624 17273928985698 19395288685696 19741633126512 19891190953228 22732789660832 23031905314264 23443189337733 25125714888288 26322177502016 29092933028544 29836786429842 31257585783644 33500953184384 34099184491248 34547857971396 39483266253024 39782381906456 45465579321664 46063810628528 46886378675466 50251429776576 52644355004032 54700775121377 58185866057088 59673572859684 62515171567288 68198368982496 69095715942792 78966532506048 79564763812912 90931158643328 92127621257056 93772757350932 100502859553152 109401550242754 119347145719368 125030343134576 136396737964992 138191431885584 157933065012096 159129527625824 164102325364131 184255242514112 187545514701864 218803100485508 238694291438736 250060686269152 272793475929984 276382863771168 318259055251648 328204650728262 368510485028224 375091029403728 437606200971016 477388582877472 500121372538304 552765727542336 636518110503296 656409301456524 750182058807456 875212401942032 954777165754944 1000242745076608 1105531455084672 1312818602913048 1500364117614912 1750424803884064 1909554331509888 2625637205826096 3000728235229824 3500849607768128 5251274411652192 7001699215536256 10502548823304384 21005097646608768
• Sum of all divisors σ(n): 73416205449987840
• Sum of proper divisors (its aliquot sum) s(n): 52411107803379072
• 21005097646608768 is an abundant number, because the sum of its proper divisors (52411107803379072) is greater than itself. Its abundance is 31406010156770304

Bases of 21005097646608768

• Binary: 1001010101000000000011001100111101100101101000110000000₂
• Hexadecimal: 0x4AA00667B2D180
• Base-36: 5QTOON78OLC

Squares and roots of 21005097646608768

• 21005097646608768 squared (21005097646608768²) is 441214127143569203883890854477824
• 21005097646608768 cubed (21005097646608768³) is 9267745823713927230292546181823057929301059960832
• The square root of 21005097646608768 is 144931354.9464323749
• The cube root of 21005097646608768 is 275914.7396740397

Scales and comparisons

• 21,005,097,646,608,768 seconds is equal to 667,897,132 years, 6 weeks, 5 days, 12 minutes, 48 seconds.
• To count from 1 to 21,005,097,646,608,768 would take you about two billion, three million, six hundred ninety-one thousand, three hundred ninety-six 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 21005097646608768 cubic inches would be around 22992.9 feet tall.

Recreational maths with 21005097646608768

• 21005097646608768 backwards is 86780664679050012
• The number of decimal digits it has is: 17
• The sum of 21005097646608768's digits is 75
• More coming soon!