21091249730792736

Names of 21091249730792736

• Cardinal: 21091249730792736 can be written as Twenty-one quadrillion, ninety-one trillion, two hundred forty-nine billion, seven hundred thirty million, seven hundred ninety-two thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.1091249730792736 × 10¹⁶

Factors of 21091249730792736

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 135443

Divisors of 21091249730792736

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 66 72 88 96 99 108 121 132 144 176 198 216 242 264 288 297 352 363 396 432 484 528 594 726 792 864 968 1056 1089 1188 1331 1452 1584 1936 2178 2376 2662 2904 3168 3267 3872 3993 4356 4752 5324 5808 6534 7986 8712 9504 10648 11616 11979 13068 15972 17424 21296 23958 26136 31944 34848 35937 42592 47916 52272 63888 71874 95832 104544 127776 135427 143748 191664 270854 287496 383328 406281 541708 574992 812562 1083416 1149984 1218843 1489697 1625124 2166832 2437686 2979394 3250248 3656529 4333664 4469091 4875372 5958788 6500496 7313058 8938182 9750744 11917576 13000992 13407273 14626116 16386667 17876364 19501488 23835152 26814546 29252232 32773334 35752728 39002976 40221819 47670304 49160001 53629092 58504464 65546668 71505456 80443638 98320002 107258184 117008928 131093336 143010912 147480003 160887276 180253337 196640004 214516368 262186672 294960006 321774552 360506674 393280008 429032736 442440009 524373344 540760011 589920012 643549104 721013348 786560016 884880018 1081520022 1179840024 1287098208 1442026696 1573120032 1622280033 1769760036 2163040044 2359680048 2884053392 3244560066 3539520072 4326080088 4719360096 4866840099 5768106784 6489120132 7079040144 8652160176 9733680198 12978240264 14158080288 17304320352 18340472329 19467360396 25956480528 36680944658 38934720792 51912961056 55021416987 73361889316 77869441584 110042833974 146723778632 155738883168 165064250961 201745195619 220085667948 293447557264 330128501922 403490391238 440171335896 495192752883 586895114528 605235586857 660257003844 806980782476 880342671792 990385505766 1210471173714 1320514007688 1613961564952 1760685343584 1815706760571 1980771011532 2219197151809 2420942347428 2641028015376 3227923129904 3631413521142 3961542023064 4438394303618 4841884694856 5282056030752 5447120281713 6455846259808 6657591455427 7262827042284 7923084046128 8876788607236 9683769389712 10894240563426 13315182910854 14525654084568 15846168092256 17753577214472 19367538779424 19972774366281 21788481126852 24411168669899 26630365821708 29051308169136 35507154428944 39945548732562 43576962253704 48822337339798 53260731643416 58102616338272 59918323098843 71014308857888 73233506009697 79891097465124 87153924507408 97644674679596 106521463286832 119836646197686 146467012019394 159782194930248 174307849014816 195289349359192 213042926573664 219700518029091 239673292395372 292934024038788 319564389860496 390578698718384 439401036058182 479346584790744 585868048077576 639128779720992 659101554087273 781157397436768 878802072116364 958693169581488 1171736096155152 1318203108174546 1757604144232728 1917386339162976 2343472192310304 2636406216349092 3515208288465456 5272812432698184 7030416576930912 10545624865396368 21091249730792736
• Sum of all divisors σ(n): 67663637385744960
• Sum of proper divisors (its aliquot sum) s(n): 46572387654952224
• 21091249730792736 is an abundant number, because the sum of its proper divisors (46572387654952224) is greater than itself. Its abundance is 25481137924159488

Bases of 21091249730792736

• Binary: 1001010111011100110000101000000000100101010110100100000₂
• Hexadecimal: 0x4AEE614012AD20
• Base-36: 5RO82D5S7C0

Squares and roots of 21091249730792736

• 21091249730792736 squared (21091249730792736²) is 444840815206664658792550990365696
• 21091249730792736 cubed (21091249730792736³) is 9382248723973187207442603716514290063160620384256
• The square root of 21091249730792736 is 145228267.6712517149
• The cube root of 21091249730792736 is 276291.4451423589

Scales and comparisons

• 21,091,249,730,792,736 seconds is equal to 670,636,501 years, 47 weeks, 5 days, 23 hours, 45 minutes, 36 seconds.
• To count from 1 to 21,091,249,730,792,736 would take you about two billion, eleven million, nine hundred nine thousand, five hundred five 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 21091249730792736 cubic inches would be around 23024.3 feet tall.

Recreational maths with 21091249730792736

• 21091249730792736 backwards is 63729703794219012
• 21091249730792736 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21091249730792736's digits is 72
• More coming soon!