166740165166 has 16 divisors (see below), whose sum is σ = 251026549200. Its totient is φ = 83064791488.

The previous prime is 166740165161. The next prime is 166740165203. The reversal of 166740165166 is 661561047661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166740165161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2462370 + ... + 2529178.

It is an arithmetic number, because the mean of its divisors is an integer number (15689159325).

Almost surely, 2^166740165166 is an apocalyptic number.

166740165166 is a deficient number, since it is larger than the sum of its proper divisors (84286384034).

166740165166 is a wasteful number, since it uses less digits than its factorization.

166740165166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71363.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 166740165166 in words is "one hundred sixty-six billion, seven hundred forty million, one hundred sixty-five thousand, one hundred sixty-six".