166845027027 has 16 divisors (see below), whose sum is σ = 254255823360. Its totient is φ = 95334097152.

The previous prime is 166845026983. The next prime is 166845027101. The reversal of 166845027027 is 720720548661.

It is not a de Polignac number, because 166845027027 - 2²⁴ = 166828249811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166845027127) 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, 111874 + ... + 588392.

It is an arithmetic number, because the mean of its divisors is an integer number (15890988960).

Almost surely, 2^166845027027 is an apocalyptic number.

166845027027 is a deficient number, since it is larger than the sum of its proper divisors (87410796333).

166845027027 is a wasteful number, since it uses less digits than its factorization.

166845027027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493202.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 166845027027 in words is "one hundred sixty-six billion, eight hundred forty-five million, twenty-seven thousand, twenty-seven".