11656446556 has 24 divisors (see below), whose sum is σ = 20540620800. Its totient is φ = 5787802800.

The previous prime is 11656446541. The next prime is 11656446563. The reversal of 11656446556 is 65564465611.

11656446556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11656446556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444901 + ... + 470371.

It is an arithmetic number, because the mean of its divisors is an integer number (855859200).

Almost surely, 2^11656446556 is an apocalyptic number.

It is an amenable number.

11656446556 is a deficient number, since it is larger than the sum of its proper divisors (8884174244).

11656446556 is a wasteful number, since it uses less digits than its factorization.

11656446556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26265 (or 26263 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 49.

The spelling of 11656446556 in words is "eleven billion, six hundred fifty-six million, four hundred forty-six thousand, five hundred fifty-six".