166501390932 has 36 divisors (see below), whose sum is σ = 420892451616. Its totient is φ = 55498626000.

The previous prime is 166501390927. The next prime is 166501390943. The reversal of 166501390932 is 239093105661.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1434057 + ... + 1545807.

Almost surely, 2^166501390932 is an apocalyptic number.

166501390932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166501390932 is an abundant number, since it is smaller than the sum of its proper divisors (254391060684).

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

166501390932 is a wasteful number, since it uses less digits than its factorization.

166501390932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153148 (or 153143 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 166501390932 in words is "one hundred sixty-six billion, five hundred one million, three hundred ninety thousand, nine hundred thirty-two".