68789975808 has 72 divisors (see below), whose sum is σ = 187547146416. Its totient is φ = 22370713600.

The previous prime is 68789975803. The next prime is 68789975827. The reversal of 68789975808 is 80857998786.

It is a self number, because there is not a number n which added to its sum of digits gives 68789975808.

It is not an unprimeable number, because it can be changed into a prime (68789975803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060833 + ... + 1123808.

It is an arithmetic number, because the mean of its divisors is an integer number (2604821478).

Almost surely, 2^68789975808 is an apocalyptic number.

It is an amenable number.

68789975808 is an abundant number, since it is smaller than the sum of its proper divisors (118757170608).

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

68789975808 is a wasteful number, since it uses less digits than its factorization.

68789975808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184701 (or 2184687 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 75.

The spelling of 68789975808 in words is "sixty-eight billion, seven hundred eighty-nine million, nine hundred seventy-five thousand, eight hundred eight".