13129799787

Names of 13129799787

• Cardinal: 13129799787 can be written as Thirteen billion, one hundred twenty-nine million, seven hundred ninety-nine thousand, seven hundred eighty-seven.

Scientific notation

• Scientific notation: 1.3129799787 × 10¹⁰

Factors of 13129799787

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 724

Divisors of 13129799787

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 9 13 27 39 67 117 169 201 351 507 603 641 871 1521 1809 1923 2613 4489 4563 5769 7839 8333 11323 13467 17307 23517 24999 33969 40401 42947 58357 74997 101907 108329 121203 128841 175071 224991 305721 324987 386523 525213 558311 758641 974961 1159569 1575639 1674933 2275923 2877449 2924883 5024799 6827769 7258043 8632347 15074397 20483307 21774129 25897041 37406837 65322387 77691123 112220511 195967161 336661533 486288881 1009984599 1458866643 4376599929 13129799787
• Sum of all divisors σ(n): 21415348080
• Sum of proper divisors (its aliquot sum) s(n): 8285548293
• 13129799787 is a deficient number, because the sum of its proper divisors (8285548293) is less than itself. Its deficiency is 4844251494

Bases of 13129799787

• Binary: 1100001110100110001101100001101011₂
• Hexadecimal: 0x30E98D86B
• Base-36: 61556CR

Squares and roots of 13129799787

• 13129799787 squared (13129799787²) is 172391642446705245369
• 13129799787 cubed (13129799787³) is 2263467750277330689497678936403
• The square root of 13129799787 is 114585.3384469409
• The cube root of 13129799787 is 2359.1344970347

Scales and comparisons

• 13,129,799,787 seconds is equal to 417 years, 25 weeks, 2 days, 6 hours, 36 minutes, 27 seconds.
• To count from 1 to 13,129,799,787 would take you about eight hundred thirty-four 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 13129799787 cubic inches would be around 196.6 feet tall.

Recreational maths with 13129799787

• 13129799787 backwards is 78799792131
• The number of decimal digits it has is: 11
• The sum of 13129799787's digits is 63
• More coming soon!