13256742605 has 8 divisors (see below), whose sum is σ = 16745359200. Its totient is φ = 10047215376.

The previous prime is 13256742593. The next prime is 13256742619. The reversal of 13256742605 is 50624765231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13256742605 - 2⁸ = 13256742349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69772235 + ... + 69772424.

It is an arithmetic number, because the mean of its divisors is an integer number (2093169900).

Almost surely, 2^13256742605 is an apocalyptic number.

It is an amenable number.

13256742605 is a deficient number, since it is larger than the sum of its proper divisors (3488616595).

13256742605 is a wasteful number, since it uses less digits than its factorization.

13256742605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139544683.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 13256742605 in words is "thirteen billion, two hundred fifty-six million, seven hundred forty-two thousand, six hundred five".