13222742556 has 96 divisors (see below), whose sum is σ = 32383991808. Its totient is φ = 4194787840.

The previous prime is 13222742539. The next prime is 13222742567. The reversal of 13222742556 is 65524722231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8855746 + ... + 8857238.

It is an arithmetic number, because the mean of its divisors is an integer number (337333248).

Almost surely, 2^13222742556 is an apocalyptic number.

It is an amenable number.

13222742556 is an abundant number, since it is smaller than the sum of its proper divisors (19161249252).

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

13222742556 is a wasteful number, since it uses less digits than its factorization.

13222742556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1969 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The spelling of 13222742556 in words is "thirteen billion, two hundred twenty-two million, seven hundred forty-two thousand, five hundred fifty-six".