13591386956 has 36 divisors (see below), whose sum is σ = 27926804808. Its totient is φ = 5770433088.

The previous prime is 13591386953. The next prime is 13591386961. The reversal of 13591386956 is 65968319531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13591386953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303065 + ... + 345008.

It is an arithmetic number, because the mean of its divisors is an integer number (775744578).

Almost surely, 2^13591386956 is an apocalyptic number.

It is an amenable number.

13591386956 is an abundant number, since it is smaller than the sum of its proper divisors (14335417852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13591386956 is a wasteful number, since it uses less digits than its factorization.

13591386956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648198 (or 648189 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 56.

The spelling of 13591386956 in words is "thirteen billion, five hundred ninety-one million, three hundred eighty-six thousand, nine hundred fifty-six".