168803720878 has 16 divisors (see below), whose sum is σ = 287034667920. Its totient is φ = 73808914176.

The previous prime is 168803720851. The next prime is 168803720881. The reversal of 168803720878 is 878027308861.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 170853475 + ... + 170854462.

It is an arithmetic number, because the mean of its divisors is an integer number (17939666745).

Almost surely, 2^168803720878 is an apocalyptic number.

168803720878 is a deficient number, since it is larger than the sum of its proper divisors (118230947042).

168803720878 is a wasteful number, since it uses less digits than its factorization.

168803720878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341707971.

The product of its (nonzero) digits is 7225344, while the sum is 58.

The spelling of 168803720878 in words is "one hundred sixty-eight billion, eight hundred three million, seven hundred twenty thousand, eight hundred seventy-eight".