166415042888 has 16 divisors (see below), whose sum is σ = 312046758780. Its totient is φ = 83202573888.

The previous prime is 166415042851. The next prime is 166415042891. The reversal of 166415042888 is 888240514661.

It can be written as a sum of positive squares in 2 ways, for example, as 165582258724 + 832784164 = 406918^2 + 28858^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473495 + ... + 746342.

Almost surely, 2^166415042888 is an apocalyptic number.

It is an amenable number.

166415042888 is a deficient number, since it is larger than the sum of its proper divisors (145631715892).

166415042888 is a wasteful number, since it uses less digits than its factorization.

166415042888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236896 (or 1236892 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 166415042888 in words is "one hundred sixty-six billion, four hundred fifteen million, forty-two thousand, eight hundred eighty-eight".