166660500057 has 16 divisors (see below), whose sum is σ = 225064416000. Its totient is φ = 109682262144.

The previous prime is 166660500047. The next prime is 166660500067. The reversal of 166660500057 is 750005066661.

It is an interprime number because it is at equal distance from previous prime (166660500047) and next prime (166660500067).

It is not a de Polignac number, because 166660500057 - 2¹⁴ = 166660483673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166660499991 and 166660500018.

It is not an unprimeable number, because it can be changed into a prime (166660500047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444419 + ... + 1555527.

It is an arithmetic number, because the mean of its divisors is an integer number (14066526000).

Almost surely, 2^166660500057 is an apocalyptic number.

It is an amenable number.

166660500057 is a deficient number, since it is larger than the sum of its proper divisors (58403915943).

166660500057 is a wasteful number, since it uses less digits than its factorization.

166660500057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117520.

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 166660500057 in words is "one hundred sixty-six billion, six hundred sixty million, five hundred thousand, fifty-seven".