168516668185 has 16 divisors (see below), whose sum is σ = 205724292480. Its totient is φ = 132478848640.

The previous prime is 168516668161. The next prime is 168516668207. The reversal of 168516668185 is 581866615861.

It is not a de Polignac number, because 168516668185 - 2⁵ = 168516668153 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 694389 + ... + 905101.

It is an arithmetic number, because the mean of its divisors is an integer number (12857768280).

Almost surely, 2^168516668185 is an apocalyptic number.

It is an amenable number.

168516668185 is a deficient number, since it is larger than the sum of its proper divisors (37207624295).

168516668185 is a wasteful number, since it uses less digits than its factorization.

168516668185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213488.

The product of its digits is 16588800, while the sum is 61.

The spelling of 168516668185 in words is "one hundred sixty-eight billion, five hundred sixteen million, six hundred sixty-eight thousand, one hundred eighty-five".