51821387394

Names of 51821387394

• Cardinal: 51821387394 can be written as Fifty-one billion, eight hundred twenty-one million, three hundred eighty-seven thousand, three hundred ninety-four.

Scientific notation

• Scientific notation: 5.1821387394 × 10¹⁰

Factors of 51821387394

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4491

Divisors of 51821387394

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 14 21 42 313 626 939 1453 1878 2191 2713 2906 4359 4382 5426 6573 8139 8718 10171 13146 16278 18991 20342 30513 37982 56973 61026 113946 454789 849169 909578 1364367 1698338 2547507 2728734 3183523 3941989 5095014 5944183 6367046 7883978 9550569 11825967 11888366 17832549 19101138 23651934 27593923 35665098 55187846 82781769 165563538 1233842557 2467685114 3701527671 7403055342 8636897899 17273795798 25910693697 51821387394
• Sum of all divisors σ(n): 118952926464
• Sum of proper divisors (its aliquot sum) s(n): 67131539070
• 51821387394 is an abundant number, because the sum of its proper divisors (67131539070) is greater than itself. Its abundance is 15310151676

Bases of 51821387394

• Binary: 110000010000110010111001111010000010₂
• Hexadecimal: 0xC10CB9E82
• Base-36: NT146F6

Squares and roots of 51821387394

• 51821387394 squared (51821387394²) is 2685456191439022111236
• 51821387394 cubed (51821387394³) is 139164065626177391154892516158984
• The square root of 51821387394 is 227643.1140930909
• The cube root of 51821387394 is 3728.2327060853

Scales and comparisons

• 51,821,387,394 seconds is equal to 1,647 years, 39 weeks, 3 days, 13 hours, 49 minutes, 54 seconds.
• To count from 1 to 51,821,387,394 would take you about three thousand, two hundred ninety-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 51821387394 cubic inches would be around 310.7 feet tall.

Recreational maths with 51821387394

• 51821387394 backwards is 49378312815
• The number of decimal digits it has is: 11
• The sum of 51821387394's digits is 51
• More coming soon!