168540716675 has 24 divisors (see below), whose sum is σ = 209356265520. Its totient is φ = 134596841600.

The previous prime is 168540716657. The next prime is 168540716699. The reversal of 168540716675 is 576617045861.

It is a happy number.

It is not a de Polignac number, because 168540716675 - 2³² = 164245749379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168540716675.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47622056 + ... + 47625594.

It is an arithmetic number, because the mean of its divisors is an integer number (8723177730).

Almost surely, 2^168540716675 is an apocalyptic number.

168540716675 is a deficient number, since it is larger than the sum of its proper divisors (40815548845).

168540716675 is a wasteful number, since it uses less digits than its factorization.

168540716675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343 (or 6338 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 168540716675 in words is "one hundred sixty-eight billion, five hundred forty million, seven hundred sixteen thousand, six hundred seventy-five".