21354561777440

Names of 21354561777440

• Cardinal: 21354561777440 can be written as Twenty-one trillion, three hundred fifty-four billion, five hundred sixty-one million, seven hundred seventy-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.135456177744 × 10¹³

Factors of 21354561777440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 329

Divisors of 21354561777440

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 80 149 160 173 298 346 596 692 745 865 1192 1384 1490 1730 2384 2768 2980 3460 4768 5536 5960 6920 11920 13840 23840 25777 27680 29929 51554 59858 103108 119716 128885 149645 206216 239432 257770 299290 412432 478864 515540 598580 824864 957728 1031080 1197160 2062160 2394320 4124320 4459421 4788640 5177717 8918842 10355434 17837684 20710868 22297105 25888585 35675368 41421736 44594210 51777170 71350736 82843472 89188420 103554340 142701472 165686944 178376840 207108680 356753680 414217360 713507360 771479833 828434720 895745041 1542959666 1791490082 3085919332 3582980164 3857399165 4478725205 6171838664 7165960328 7714798330 8957450410 12343677328 14331920656 15429596660 17914900820 24687354656 28663841312 30859193320 35829801640 61718386640 71659603280 123436773280 133466011109 143319206560 266932022218 533864044436 667330055545 1067728088872 1334660111090 2135456177744 2669320222180 4270912355488 5338640444360 10677280888720 21354561777440
• Sum of all divisors σ(n): 51084027218700
• Sum of proper divisors (its aliquot sum) s(n): 29729465441260
• 21354561777440 is an abundant number, because the sum of its proper divisors (29729465441260) is greater than itself. Its abundance is 8374903663820

Bases of 21354561777440

• Binary: 100110110101111111111000100011010111100100000₂
• Hexadecimal: 0x136BFF11AF20
• Base-36: 7KI5EQ23K

Squares and roots of 21354561777440

• 21354561777440 squared (21354561777440²) is 456017308706501412092953600
• 21354561777440 cubed (21354561777440³) is 9738049790354911981907573138915446784000
• The square root of 21354561777440 is 4621099.6285992363
• The cube root of 21354561777440 is 27743.6472874949

Scales and comparisons

• 21,354,561,777,440 seconds is equal to 679,009 years, 3 days, 19 hours, 57 minutes, 20 seconds.
• To count from 1 to 21,354,561,777,440 would take you about one million, six hundred ninety-seven thousand, five hundred twenty-two 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 21354561777440 cubic inches would be around 2312 feet tall.

Recreational maths with 21354561777440

• 21354561777440 backwards is 04477716545312
• The number of decimal digits it has is: 14
• The sum of 21354561777440's digits is 56
• More coming soon!