21297561966018

Names of 21297561966018

• Cardinal: 21297561966018 can be written as Twenty-one trillion, two hundred ninety-seven billion, five hundred sixty-one million, nine hundred sixty-six thousand and eighteen.

Scientific notation

• Scientific notation: 2.1297561966018 × 10¹³

Factors of 21297561966018

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1051

Divisors of 21297561966018

• Number of divisors d(n): 198
• Complete list of divisors:
  1 2 3 6 9 13 18 26 27 39 54 78 81 117 162 169 234 243 338 351 486 507 702 729 1014 1033 1053 1458 1521 2066 2106 2187 3042 3099 3159 4374 4563 6198 6318 6561 9126 9297 9477 13122 13429 13689 18594 18954 19683 26858 27378 27891 28431 39366 40287 41067 55782 56862 59049 80574 82134 83673 85293 118098 120861 123201 167346 170586 174577 241722 246402 251019 255879 349154 362583 369603 502038 511758 523731 725166 739206 753057 767637 1047462 1067089 1087749 1108809 1506114 1535274 1571193 2134178 2175498 2217618 2259171 3142386 3201267 3263247 3326427 4518342 4713579 6402534 6526494 6652854 6777513 9427158 9603801 9789741 9979281 13555026 13872157 14140737 19207602 19579482 19958562 20332539 27744314 28281474 28811403 29369223 40665078 41616471 42422211 57622806 58738446 60997617 83232942 84844422 86434209 88107669 121995234 124849413 127266633 172868418 176215338 180338041 249698826 254533266 259302627 264323007 360676082 374548239 381799899 518605254 528646014 541014123 749096478 763599798 777907881 792969021 1082028246 1123644717 1145399697 1555815762 1585938042 1623042369 2247289434 2290799394 2333723643 3246084738 3370934151 3436199091 4667447286 4869127107 6741868302 6872398182 7001170929 9738254214 10112802453 10308597273 14002341858 14607381321 20225604906 20617194546 21003512787 29214762642 30338407359 42007025574 43822143963 60676814718 63010538361 87644287926 91015222077 126021076722 131466431889 182030444154 262932863778 273045666231 394399295667 546091332462 788798591334 819136998693 1183197887001 1638273997386 2366395774002 3549593661003 7099187322006 10648780983009 21297561966018
• Sum of all divisors σ(n): 51939165304971
• Sum of proper divisors (its aliquot sum) s(n): 30641603338953
• 21297561966018 is an abundant number, because the sum of its proper divisors (30641603338953) is greater than itself. Its abundance is 9344041372935

Bases of 21297561966018

• Binary: 100110101111010111001100111011001010111000010₂
• Hexadecimal: 0x135EB99D95C2
• Base-36: 7JRYQIA4I

Squares and roots of 21297561966018

• 21297561966018 squared (21297561966018²) is 453586145696376497386776324
• 21297561966018 cubed (21297561966018³) is 9660279044895847225383440606324654957832
• The square root of 21297561966018 is 4614928.1647733155
• The cube root of 21297561966018 is 27718.9407511837

Scales and comparisons

• 21,297,561,966,018 seconds is equal to 677,196 years, 30 weeks, 5 days, 19 hours, 18 seconds.
• To count from 1 to 21,297,561,966,018 would take you about one million, six hundred ninety-two thousand, nine hundred ninety-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 21297561966018 cubic inches would be around 2309.9 feet tall.

Recreational maths with 21297561966018

• 21297561966018 backwards is 81066916579212
• The number of decimal digits it has is: 14
• The sum of 21297561966018's digits is 63
• More coming soon!