11556422512 has 40 divisors (see below), whose sum is σ = 23555300400. Its totient is φ = 5484390912.

The previous prime is 11556422509. The next prime is 11556422561. The reversal of 11556422512 is 21522465511.

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 7 ways as a sum of consecutive naturals, for example, 183693 + ... + 238444.

It is an arithmetic number, because the mean of its divisors is an integer number (588882510).

Almost surely, 2^11556422512 is an apocalyptic number.

It is an amenable number.

11556422512 is an abundant number, since it is smaller than the sum of its proper divisors (11998877888).

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

11556422512 is a wasteful number, since it uses less digits than its factorization.

11556422512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422233 (or 422227 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The spelling of 11556422512 in words is "eleven billion, five hundred fifty-six million, four hundred twenty-two thousand, five hundred twelve".