13004705257 has 4 divisors (see below), whose sum is σ = 13005667456. Its totient is φ = 13003743060.

The previous prime is 13004705243. The next prime is 13004705267. The reversal of 13004705257 is 75250740031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13004705257 - 2²⁷ = 12870487529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13004705267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460533 + ... + 487954.

It is an arithmetic number, because the mean of its divisors is an integer number (3251416864).

Almost surely, 2^13004705257 is an apocalyptic number.

It is an amenable number.

13004705257 is a deficient number, since it is larger than the sum of its proper divisors (962199).

13004705257 is an equidigital number, since it uses as much as digits as its factorization.

13004705257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962198.

The product of its (nonzero) digits is 29400, while the sum is 34.

The spelling of 13004705257 in words is "thirteen billion, four million, seven hundred five thousand, two hundred fifty-seven".