12813479775 has 24 divisors (see below), whose sum is σ = 23538838160. Its totient is φ = 6833855520.

The previous prime is 12813479753. The next prime is 12813479779. The reversal of 12813479775 is 57797431821.

It is not a de Polignac number, because 12813479775 - 2¹⁰ = 12813478751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813479779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9490792 + ... + 9492141.

Almost surely, 2^12813479775 is an apocalyptic number.

12813479775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12813479775 is a deficient number, since it is larger than the sum of its proper divisors (10725358385).

12813479775 is a wasteful number, since it uses less digits than its factorization.

12813479775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982952 (or 18982941 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The spelling of 12813479775 in words is "twelve billion, eight hundred thirteen million, four hundred seventy-nine thousand, seven hundred seventy-five".