168351685164 has 72 divisors (see below), whose sum is σ = 464568747552. Its totient is φ = 51090912000.

The previous prime is 168351685147. The next prime is 168351685169. The reversal of 168351685164 is 461586153861.

168351685164 is a `hidden beast` number, since 1 + 68 + 3 + 5 + 1 + 68 + 516 + 4 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 168351685164.

It is not an unprimeable number, because it can be changed into a prime (168351685169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2429712 + ... + 2498039.

It is an arithmetic number, because the mean of its divisors is an integer number (6452343716).

Almost surely, 2^168351685164 is an apocalyptic number.

It is an amenable number.

168351685164 is an abundant number, since it is smaller than the sum of its proper divisors (296217062388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168351685164 is a wasteful number, since it uses less digits than its factorization.

168351685164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927847 (or 4927842 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 168351685164 in words is "one hundred sixty-eight billion, three hundred fifty-one million, six hundred eighty-five thousand, one hundred sixty-four".