166780118079 has 48 divisors (see below), whose sum is σ = 254502743040. Its totient is φ = 105107967360.

The previous prime is 166780118051. The next prime is 166780118101. The reversal of 166780118079 is 970811087661.

It is not a de Polignac number, because 166780118079 - 2⁵ = 166780118047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166780118039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2020512 + ... + 2101434.

It is an arithmetic number, because the mean of its divisors is an integer number (5302140480).

Almost surely, 2^166780118079 is an apocalyptic number.

166780118079 is a deficient number, since it is larger than the sum of its proper divisors (87722624961).

166780118079 is a wasteful number, since it uses less digits than its factorization.

166780118079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81132 (or 81129 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 166780118079 in words is "one hundred sixty-six billion, seven hundred eighty million, one hundred eighteen thousand, seventy-nine".