13256522436 has 24 divisors (see below), whose sum is σ = 31929689344. Its totient is φ = 4276297440.

The previous prime is 13256522413. The next prime is 13256522453. The reversal of 13256522436 is 63422565231.

It is a junction number, because it is equal to n+sod(n) for n = 13256522394 and 13256522403.

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, 17817535 + ... + 17818278.

Almost surely, 2^13256522436 is an apocalyptic number.

It is an amenable number.

13256522436 is an abundant number, since it is smaller than the sum of its proper divisors (18673166908).

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

13256522436 is a wasteful number, since it uses less digits than its factorization.

13256522436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35635851 (or 35635849 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The spelling of 13256522436 in words is "thirteen billion, two hundred fifty-six million, five hundred twenty-two thousand, four hundred thirty-six".