11664156532 has 24 divisors (see below), whose sum is σ = 23332651776. Its totient is φ = 4997994528.

The previous prime is 11664156473. The next prime is 11664156557. The reversal of 11664156532 is 23565146611.

It is a happy number.

It is a congruent number.

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, 126933 + ... + 198595.

It is an arithmetic number, because the mean of its divisors is an integer number (972193824).

Almost surely, 2^11664156532 is an apocalyptic number.

It is an amenable number.

11664156532 is an abundant number, since it is smaller than the sum of its proper divisors (11668495244).

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

11664156532 is a wasteful number, since it uses less digits than its factorization.

11664156532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77487 (or 77485 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The spelling of 11664156532 in words is "eleven billion, six hundred sixty-four million, one hundred fifty-six thousand, five hundred thirty-two".