166650003775 has 12 divisors (see below), whose sum is σ = 210033646024. Its totient is φ = 131134428000.

The previous prime is 166650003761. The next prime is 166650003787. The reversal of 166650003775 is 577300056661.

It is not a de Polignac number, because 166650003775 - 2²⁹ = 166113132863 is a prime.

It is a Duffinian number.

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, 54637821 + ... + 54640870.

Almost surely, 2^166650003775 is an apocalyptic number.

166650003775 is a deficient number, since it is larger than the sum of its proper divisors (43383642249).

166650003775 is a wasteful number, since it uses less digits than its factorization.

166650003775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109278762 (or 109278757 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 166650003775 in words is "one hundred sixty-six billion, six hundred fifty million, three thousand, seven hundred seventy-five".