21379945792691520

Names of 21379945792691520

• Cardinal: 21379945792691520 can be written as Twenty-one quadrillion, three hundred seventy-nine trillion, nine hundred forty-five billion, seven hundred ninety-two million, six hundred ninety-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.137994579269152 × 10¹⁶

Factors of 21379945792691520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 963

Divisors of 21379945792691520

• Number of divisors d(n): 350
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 135 144 160 162 180 192 216 240 270 288 320 324 360 405 432 480 540 576 648 720 810 864 953 960 1080 1296 1440 1620 1728 1906 2160 2592 2859 2880 3240 3812 4320 4765 5184 5718 6480 7624 8577 8640 9530 11436 12960 14295 15248 17154 19060 22872 25731 25920 28590 30496 34308 38120 42885 45744 51462 57180 60992 68616 76240 77193 85770 91488 102924 114360 128655 137232 152480 154386 171540 182976 205848 228720 257310 274464 304960 308772 343080 385965 411696 457440 514620 548928 617544 686160 771930 823392 908209 914880 1029240 1235088 1372320 1543860 1646784 1816418 2058480 2470176 2724627 2744640 3087720 3632836 4116960 4541045 4940352 5449254 6175440 7265672 8173881 8233920 9082090 10898508 12350880 13623135 14531344 16347762 18164180 21797016 24521643 24701760 27246270 29062688 32695524 36328360 40869405 43594032 49043286 54492540 58125376 65391048 72656720 73564929 81738810 87188064 98086572 108985080 122608215 130782096 145313440 147129858 163477620 174376128 196173144 217970160 245216430 261564192 290626880 294259716 326955240 367824645 392346288 435940320 490432860 523128384 588519432 653910480 735649290 784692576 865523177 871880640 980865720 1177038864 1307820960 1471298580 1569385152 1731046354 1961731440 2354077728 2596569531 2615641920 2942597160 3462092708 3923462880 4327615885 4708155456 5193139062 5885194320 6924185416 7789708593 7846925760 8655231770 10386278124 11770388640 12982847655 13848370832 15579417186 17310463540 20772556248 23369125779 23540777280 25965695310 27696741664 31158834372 34620927080 38948542965 41545112496 46738251558 51931390620 55393483328 62317668744 69241854160 70107377337 77897085930 83090224992 93476503116 103862781240 116845628895 124635337488 138483708320 140214754674 155794171860 166180449984 186953006232 207725562480 233691257790 249270674976 276967416640 280429509348 311588343720 350536886685 373906012464 415451124960 467382515580 498541349952 560859018696 623176687440 701073773370 747812024928 824843587681 830902249920 934765031160 1121718037392 1246353374880 1402147546740 1495624049856 1649687175362 1869530062320 2243436074784 2474530763043 2492706749760 2804295093480 3299374350724 3739060124640 4124217938405 4486872149568 4949061526086 5608590186960 6598748701448 7423592289129 7478120249280 8248435876810 9898123052172 11217180373920 12372653815215 13197497402896 14847184578258 16496871753620 19796246104344 22270776867387 22434360747840 24745307630430 26394994805792 29694369156516 32993743507240 37117961445645 39592492208688 44541553734774 49490615260860 52789989611584 59388738313032 65987487014480 66812330602161 74235922891290 79184984417376 89083107469548 98981230521720 111353884336935 118777476626064 131974974028960 133624661204322 148471845782580 158369968834752 178166214939096 197962461043440 222707768673870 237554953252128 263949948057920 267249322408644 296943691565160 334061653010805 356332429878192 395924922086880 445415537347740 475109906504256 534498644817288 593887383130320 668123306021610 712664859756384 791849844173760 890831074695480 1068997289634576 1187774766260640 1336246612043220 1425329719512768 1781662149390960 2137994579269152 2375549532521280 2672493224086440 3563324298781920 4275989158538304 5344986448172880 7126648597563840 10689972896345760 21379945792691520
• Sum of all divisors σ(n): 76132115265976242
• Sum of proper divisors (its aliquot sum) s(n): 54752169473284722
• 21379945792691520 is an abundant number, because the sum of its proper divisors (54752169473284722) is greater than itself. Its abundance is 33372223680593202

Bases of 21379945792691520

• Binary: 1001011111101001111001010001010010010100101110101000000₂
• Hexadecimal: 0x4BF4F28A4A5D40
• Base-36: 5UIK3I74K00

Squares and roots of 21379945792691520

• 21379945792691520 squared (21379945792691520²) is 457102082098427827492645879910400
• 21379945792691520 cubed (21379945792691520³) is 9772817736990815792029801002404208295912439808000
• The square root of 21379945792691520 is 146218828.4479516681
• The cube root of 21379945792691520 is 277546.3582651863

Scales and comparisons

• 21,379,945,792,691,520 seconds is equal to 679,816,143 years, 36 weeks, 7 hours, 12 minutes.
• To count from 1 to 21,379,945,792,691,520 would take you about two billion, thirty-nine million, four hundred forty-eight thousand, four hundred thirty-one 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 21379945792691520 cubic inches would be around 23128.9 feet tall.

Recreational maths with 21379945792691520

• 21379945792691520 backwards is 02519629754997312
• 21379945792691520 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21379945792691520's digits is 81
• More coming soon!