166538969232 has 40 divisors (see below), whose sum is σ = 431109151296. Its totient is φ = 55398992256.

The previous prime is 166538969123. The next prime is 166538969243. The reversal of 166538969232 is 232969835661.

It is a happy 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, 3538803 + ... + 3585554.

Almost surely, 2^166538969232 is an apocalyptic number.

166538969232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166538969232 is an abundant number, since it is smaller than the sum of its proper divisors (264570182064).

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

166538969232 is a wasteful number, since it uses less digits than its factorization.

166538969232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124855 (or 7124849 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 60.

The spelling of 166538969232 in words is "one hundred sixty-six billion, five hundred thirty-eight million, nine hundred sixty-nine thousand, two hundred thirty-two".