166099610678 has 32 divisors (see below), whose sum is σ = 273171463200. Its totient is φ = 75394676224.

The previous prime is 166099610647. The next prime is 166099610681. The reversal of 166099610678 is 876016990661.

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, 922076 + ... + 1087392.

It is an arithmetic number, because the mean of its divisors is an integer number (8536608225).

Almost surely, 2^166099610678 is an apocalyptic number.

166099610678 is a deficient number, since it is larger than the sum of its proper divisors (107071852522).

166099610678 is a wasteful number, since it uses less digits than its factorization.

166099610678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166384.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 166099610678 in words is "one hundred sixty-six billion, ninety-nine million, six hundred ten thousand, six hundred seventy-eight".