21389507493625856

Names of 21389507493625856

• Cardinal: 21389507493625856 can be written as Twenty-one quadrillion, three hundred eighty-nine trillion, five hundred seven billion, four hundred ninety-three million, six hundred twenty-five thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 2.1389507493625856 × 10¹⁶

Factors of 21389507493625856

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 23
• Sum of prime factors: 1989

Divisors of 21389507493625856

• Number of divisors d(n): 304
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 104 128 151 208 256 302 416 512 604 832 1024 1208 1664 1823 1963 2048 2416 3328 3646 3926 4096 4832 6656 7292 7852 8192 9664 13312 14584 15704 16384 19328 22801 23699 26624 29168 31408 32768 38656 45602 47398 53248 58336 62816 65536 77312 91204 94796 106496 116672 125632 131072 154624 182408 189592 212992 233344 251264 262144 275273 296413 309248 364816 379184 425984 466688 502528 550546 592826 618496 729632 758368 851968 933376 1005056 1101092 1185652 1236992 1459264 1516736 1703936 1866752 2010112 2202184 2371304 2473984 2918528 3033472 3407872 3442951 3578549 3733504 4020224 4404368 4742608 4947968 5837056 6066944 6885902 7157098 7467008 8040448 8808736 9485216 9895936 11674112 12133888 13771804 14314196 14934016 16080896 17617472 18970432 19791872 23348224 24267776 27543608 28628392 29868032 32161792 35234944 37940864 39583744 41566223 44758363 46696448 48535552 55087216 57256784 59736064 64323584 70469888 75881728 83132446 89516726 93392896 97071104 110174432 114513568 119472128 128647168 140939776 151763456 166264892 179033452 186785792 194142208 220348864 229027136 238944256 257294336 281879552 303526912 332529784 358066904 373571584 388284416 440697728 458054272 477888512 514588672 540360899 563759104 607053824 665059568 716133808 747143168 776568832 881395456 916108544 1080721798 1127518208 1214107648 1330119136 1432267616 1494286336 1553137664 1762790912 1832217088 2161443596 2255036416 2428215296 2660238272 2864535232 2988572672 3106275328 3525581824 3664434176 4322887192 4510072832 4856430592 5320476544 5729070464 5977145344 6212550656 6276499673 7051163648 7328868352 8645774384 9020145664 9712861184 10640953088 11458140928 12552999346 14102327296 14657736704 17291548768 18040291328 19425722368 21281906176 22916281856 25105998692 28204654592 29315473408 34583097536 36080582656 38851444736 42563812352 45832563712 50211997384 56409309184 58630946816 69166195072 72161165312 77702889472 81594495749 85127624704 91665127424 100423994768 112818618368 117261893632 138332390144 163188991498 170255249408 183330254848 200847989536 225637236736 234523787264 276664780288 326377982996 340510498816 366660509696 401695979072 451274473472 469047574528 553329560576 652755965992 681020997632 733321019392 803391958144 902548946944 938095149056 1106659121152 1305511931984 1362041995264 1466642038784 1606783916288 2213318242304 2611023863968 2724083990528 2933284077568 3213567832576 4426636484608 5222047727936 5448167981056 5866568155136 6427135665152 8853272969216 10444095455872 10896335962112 11733136310272 12854271330304 17706545938432 20888190911744 25708542660608 35413091876864 41776381823488 51417085321216 70826183753728 83552763646976 102834170642432 141652367507456 167105527293952 205668341284864 334211054587904 411336682569728 668422109175808 822673365139456 1336844218351616 1645346730278912 2673688436703232 5347376873406464 10694753746812928 21389507493625856
• Sum of all divisors σ(n): 46402191089200128
• Sum of proper divisors (its aliquot sum) s(n): 25012683595574272
• 21389507493625856 is an abundant number, because the sum of its proper divisors (25012683595574272) is greater than itself. Its abundance is 3623176101948416

Bases of 21389507493625856

• Binary: 1001011111111011010010011001100000101000000000000000000₂
• Hexadecimal: 0x4BFDA4CC140000
• Base-36: 5ULY438ZJ7K

Squares and roots of 21389507493625856

• 21389507493625856 squared (21389507493625856²) is 457511030819876648252469711732736
• 21389507493625856 cubed (21389507493625856³) is 9785935622138241524836730974431604369297051222016
• The square root of 21389507493625856 is 146251521.3378167085
• The cube root of 21389507493625856 is 277587.7275585943

Scales and comparisons

• 21,389,507,493,625,856 seconds is equal to 680,120,176 years, 10 weeks, 5 days, 4 hours, 30 minutes, 56 seconds.
• To count from 1 to 21,389,507,493,625,856 would take you about two billion, forty million, three hundred sixty thousand, five hundred twenty-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 21389507493625856 cubic inches would be around 23132.3 feet tall.

Recreational maths with 21389507493625856

• 21389507493625856 backwards is 65852639470598312
• The number of decimal digits it has is: 17
• The sum of 21389507493625856's digits is 83
• More coming soon!