21397489885041920

Names of 21397489885041920

• Cardinal: 21397489885041920 can be written as Twenty-one quadrillion, three hundred ninety-seven trillion, four hundred eighty-nine billion, eight hundred eighty-five million, forty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.139748988504192 × 10¹⁶

Factors of 21397489885041920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 1881

Divisors of 21397489885041920

• Number of divisors d(n): 378
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 169 208 256 260 320 338 416 520 640 676 832 845 1040 1280 1352 1664 1690 1861 2080 2197 2704 3328 3380 3722 4160 4394 5408 6760 7444 8320 8788 9305 10816 10985 13520 14888 16640 17576 18610 21632 21970 24193 27040 28561 29776 35152 37220 43264 43940 48386 54080 57122 59552 70304 74440 87880 96772 108160 114244 119104 120965 140608 142805 148880 175760 193544 216320 228488 238208 241930 281216 285610 297760 314509 351520 371293 387088 456976 476416 483860 562432 571220 595520 629018 703040 742586 774176 913952 967720 1142440 1191040 1258036 1406080 1485172 1548352 1572545 1827904 1856465 1935440 2284880 2382080 2516072 2812160 2970344 3096704 3145090 3463321 3655808 3712930 3870880 4088617 4569760 4826809 5032144 5940688 6193408 6290180 6926642 7311616 7425860 7741760 8177234 9139520 9653618 10064288 11881376 12580360 13853284 14851720 15483520 16354468 17316605 18279040 19307236 20128576 20443085 23762752 24134045 25160720 27706568 29703440 30967040 32708936 34633210 36558080 38614472 40257152 40886170 45023173 47525504 48268090 50321440 53152021 55413136 59406880 65417872 69266420 77228944 80514304 81772340 90046346 95051008 96536180 100642880 106304042 110826272 118813760 130835744 138532840 154457888 163544680 180092692 193072360 201285760 212608084 221652544 225115865 237627520 261671488 265760105 277065680 308915776 327089360 360185384 386144720 402571520 425216168 443305088 450231730 475255040 523342976 531520210 554131360 585301249 617831552 654178720 690976273 720370768 772289440 850432336 886610176 900463460 1046685952 1063040420 1108262720 1170602498 1235663104 1308357440 1381952546 1440741536 1544578880 1700864672 1800926920 2126080840 2216525440 2341204996 2616714880 2763905092 2881483072 2926506245 3089157760 3401729344 3454881365 3601853840 4252161680 4433050880 4682409992 5233429760 5527810184 5762966144 5853012490 6178315520 6803458688 6909762730 7203707680 7608916237 8504323360 8982691549 9364819984 11055620368 11525932288 11706024980 13606917376 13819525460 14407415360 15217832474 17008646720 17965383098 18729639968 22111240736 23412049960 27639050920 28814830720 30435664948 34017293440 35930766196 37459279936 38044581185 44222481472 44913457745 46824099920 55278101840 57629661440 60871329896 68034586880 71861532392 74918559872 76089162370 88444962944 89826915490 93648199840 98915911081 110556203680 121742659792 143723064784 149837119744 152178324740 176889925888 179653830980 187296399680 197831822162 221112407360 243485319584 287446129568 304356649480 359307661960 374592799360 395663644324 442224814720 486970639168 494579555405 574892259136 608713298960 718615323920 749185598720 791327288648 884449629440 973941278336 989159110810 1149784518272 1217426597920 1285906844053 1437230647840 1582654577296 1947882556672 1978318221620 2299569036544 2434853195840 2571813688106 2874461295680 3165309154592 3956636443240 4869706391680 5143627376212 5748922591360 6330618309184 6429534220265 7913272886480 9739412783360 10287254752424 11497845182720 12661236618368 12859068440530 15826545772960 16716788972689 20574509504848 25322473236736 25718136881060 31653091545920 33433577945378 41149019009696 51436273762120 63306183091840 66867155890756 82298038019392 83583944863445 102872547524240 126612366183680 133734311781512 164596076038784 167167889726890 205745095048480 267468623563024 329192152077568 334335779453780 411490190096960 534937247126048 668671558907560 822980380193920 1069874494252096 1337343117815120 1645960760387840 2139748988504192 2674686235630240 4279497977008384 5349372471260480 10698744942520960 21397489885041920
• Sum of all divisors σ(n): 55554665729658354
• Sum of proper divisors (its aliquot sum) s(n): 34157175844616434
• 21397489885041920 is an abundant number, because the sum of its proper divisors (34157175844616434) is greater than itself. Its abundance is 12759685959574514

Bases of 21397489885041920

• Binary: 1001100000001001110011101010111101011101101010100000000₂
• Hexadecimal: 0x4C04E757AED500
• Base-36: 5UORZ5EQJ28

Squares and roots of 21397489885041920

• 21397489885041920 squared (21397489885041920²) is 457852573380471278776960157286400
• 21397489885041920 cubed (21397489885041920³) is 9796895807749047624039129492590083217857445888000
• The square root of 21397489885041920 is 146278808.7353801223
• The cube root of 21397489885041920 is 277622.2544297745

Scales and comparisons

• 21,397,489,885,041,920 seconds is equal to 680,373,991 years, 29 weeks, 1 day, 17 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,397,489,885,041,920 would take you about two billion, forty-one million, one hundred twenty-one thousand, nine hundred seventy-four 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 21397489885041920 cubic inches would be around 23135.2 feet tall.

Recreational maths with 21397489885041920

• 21397489885041920 backwards is 02914058898479312
• 21397489885041920 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21397489885041920's digits is 80
• More coming soon!