21379834047

Names of 21379834047

• Cardinal: 21379834047 can be written as Twenty-one billion, three hundred seventy-nine million, eight hundred thirty-four thousand and forty-seven.

Scientific notation

• Scientific notation: 2.1379834047 × 10¹⁰

Factors of 21379834047

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 16792

Divisors of 21379834047

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 11 13 33 39 41 73 123 143 219 429 451 533 803 949 1353 1599 2409 2847 2993 5863 8979 10439 16651 17589 31317 32923 38909 49953 98769 116727 183161 216463 427999 549483 649389 682691 1215523 1283997 2048073 2381093 3646569 7143279 7509601 8874983 13370753 15801799 22528803 26624949 40112259 47405397 49836443 97624813 149509329 173819789 292874439 521459367 548200873 647873759 1644602619 1943621277 7126611349 21379834047
• Sum of all divisors σ(n): 34778967552
• Sum of proper divisors (its aliquot sum) s(n): 13399133505
• 21379834047 is a deficient number, because the sum of its proper divisors (13399133505) is less than itself. Its deficiency is 7980700542

Bases of 21379834047

• Binary: 10011111010010101100110000010111111₂
• Hexadecimal: 0x4FA5660BF
• Base-36: 9TL01J3

Squares and roots of 21379834047

• 21379834047 squared (21379834047²) is 457097303877260398209
• 21379834047 cubed (21379834047³) is 9772664500226956970713556021823
• The square root of 21379834047 is 146218.4463294561
• The cube root of 21379834047 is 2775.4587471759

Scales and comparisons

• 21,379,834,047 seconds is equal to 679 years, 42 weeks, 1 day, 18 hours, 47 minutes, 27 seconds.
• To count from 1 to 21,379,834,047 would take you about one thousand, three hundred fifty-nine 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 21379834047 cubic inches would be around 231.3 feet tall.

Recreational maths with 21379834047

• 21379834047 backwards is 74043897312
• The number of decimal digits it has is: 11
• The sum of 21379834047's digits is 48
• More coming soon!