13256133634 has 16 divisors (see below), whose sum is σ = 21080376576. Its totient is φ = 6240898800.

The previous prime is 13256133623. The next prime is 13256133641. The reversal of 13256133634 is 43633165231.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 13256133593 and 13256133602.

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, 2887012 + ... + 2891599.

It is an arithmetic number, because the mean of its divisors is an integer number (1317523536).

Almost surely, 2^13256133634 is an apocalyptic number.

13256133634 is a deficient number, since it is larger than the sum of its proper divisors (7824242942).

13256133634 is a wasteful number, since it uses less digits than its factorization.

13256133634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778681.

The product of its digits is 116640, while the sum is 37.

Adding to 13256133634 its reverse (43633165231), we get a palindrome (56889298865).

The spelling of 13256133634 in words is "thirteen billion, two hundred fifty-six million, one hundred thirty-three thousand, six hundred thirty-four".