21511772142

Names of 21511772142

• Cardinal: 21511772142 can be written as Twenty-one billion, five hundred eleven million, seven hundred seventy-two thousand, one hundred forty-two.

Scientific notation

• Scientific notation: 2.1511772142 × 10¹⁰

Factors of 21511772142

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6359

Divisors of 21511772142

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 14 21 42 49 67 98 134 147 179 201 294 358 402 469 537 938 1074 1253 1407 2506 2814 3283 3759 6101 6566 7518 8771 9849 11993 12202 17542 18303 19698 23986 26313 35979 36606 42707 52626 71958 83951 85414 128121 167902 251853 256242 298949 408767 503706 587657 597898 817534 896847 1092079 1175314 1226301 1762971 1793694 2184158 2452602 2861369 3276237 3525942 5722738 6552474 7644553 8584107 15289106 17168214 20029583 22933659 40059166 45867318 53511871 60088749 73169293 107023742 120177498 146338586 160535613 219507879 321071226 439015758 512185051 1024370102 1536555153 3073110306 3585295357 7170590714 10755886071 21511772142
• Sum of all divisors σ(n): 51086920320
• Sum of proper divisors (its aliquot sum) s(n): 29575148178
• 21511772142 is an abundant number, because the sum of its proper divisors (29575148178) is greater than itself. Its abundance is 8063376036

Bases of 21511772142

• Binary: 10100000010001100111001011111101110₂
• Hexadecimal: 0x5023397EE
• Base-36: 9VRJXM6

Squares and roots of 21511772142

• 21511772142 squared (21511772142²) is 462756340689327268164
• 21511772142 cubed (21511772142³) is 9954708958174531404011298687288
• The square root of 21511772142 is 146668.9201637485
• The cube root of 21511772142 is 2781.1562975379

Scales and comparisons

• 21,511,772,142 seconds is equal to 684 years, 2 days, 20 hours, 15 minutes, 42 seconds.
• To count from 1 to 21,511,772,142 would take you about one thousand, three hundred sixty-eight 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 21511772142 cubic inches would be around 231.8 feet tall.

Recreational maths with 21511772142

• 21511772142 backwards is 24127711512
• The number of decimal digits it has is: 11
• The sum of 21511772142's digits is 33
• More coming soon!