166416660325 has 12 divisors (see below), whose sum is σ = 206438012320. Its totient is φ = 133080842160.

The previous prime is 166416660301. The next prime is 166416660433. The reversal of 166416660325 is 523066614661.

It is a happy number.

It is not a de Polignac number, because 166416660325 - 2⁷ = 166416660197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1247409 + ... + 1374358.

Almost surely, 2^166416660325 is an apocalyptic number.

It is an amenable number.

166416660325 is a deficient number, since it is larger than the sum of its proper divisors (40021351995).

166416660325 is a wasteful number, since it uses less digits than its factorization.

166416660325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624316 (or 2624311 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 166416660325 in words is "one hundred sixty-six billion, four hundred sixteen million, six hundred sixty thousand, three hundred twenty-five".