13256656112 has 80 divisors (see below), whose sum is σ = 29586648000. Its totient is φ = 5636597760.

The previous prime is 13256656103. The next prime is 13256656129. The reversal of 13256656112 is 21165665231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8950412 + ... + 8951892.

It is an arithmetic number, because the mean of its divisors is an integer number (369833100).

Almost surely, 2^13256656112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13256656112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14793324000).

13256656112 is an abundant number, since it is smaller than the sum of its proper divisors (16329991888).

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

13256656112 is a wasteful number, since it uses less digits than its factorization.

13256656112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074 (or 2068 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The spelling of 13256656112 in words is "thirteen billion, two hundred fifty-six million, six hundred fifty-six thousand, one hundred twelve".