168516685008 has 80 divisors (see below), whose sum is σ = 552806066560. Its totient is φ = 48147623424.

The previous prime is 168516685003. The next prime is 168516685021. The reversal of 168516685008 is 800586615861.

168516685008 is a `hidden beast` number, since 1 + 68 + 5 + 16 + 68 + 500 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168516685003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27860185 + ... + 27866232.

It is an arithmetic number, because the mean of its divisors is an integer number (6910075832).

Almost surely, 2^168516685008 is an apocalyptic number.

168516685008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168516685008 is an abundant number, since it is smaller than the sum of its proper divisors (384289381552).

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

168516685008 is a wasteful number, since it uses less digits than its factorization.

168516685008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55726441 (or 55726429 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 168516685008 in words is "one hundred sixty-eight billion, five hundred sixteen million, six hundred eighty-five thousand, eight".