166640450245 has 16 divisors (see below), whose sum is σ = 209326464000. Its totient is φ = 127194883200.

The previous prime is 166640450219. The next prime is 166640450279. The reversal of 166640450245 is 542054046661.

It is not a de Polignac number, because 166640450245 - 2⁵ = 166640450213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7560120 + ... + 7582129.

It is an arithmetic number, because the mean of its divisors is an integer number (13082904000).

Almost surely, 2^166640450245 is an apocalyptic number.

It is an amenable number.

166640450245 is a deficient number, since it is larger than the sum of its proper divisors (42686013755).

166640450245 is a wasteful number, since it uses less digits than its factorization.

166640450245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15142356.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 166640450245 in words is "one hundred sixty-six billion, six hundred forty million, four hundred fifty thousand, two hundred forty-five".