166155665160 has 32 divisors (see below), whose sum is σ = 498466995840. Its totient is φ = 44308177344.

The previous prime is 166155665153. The next prime is 166155665173. The reversal of 166155665160 is 61566551661.

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, 692315152 + ... + 692315391.

It is an arithmetic number, because the mean of its divisors is an integer number (15577093620).

Almost surely, 2^166155665160 is an apocalyptic number.

166155665160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166155665160 is an abundant number, since it is smaller than the sum of its proper divisors (332311330680).

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

166155665160 is a wasteful number, since it uses less digits than its factorization.

166155665160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384630557 (or 1384630553 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 166155665160 in words is "one hundred sixty-six billion, one hundred fifty-five million, six hundred sixty-five thousand, one hundred sixty".