678140380808 has 64 divisors (see below), whose sum is σ = 1421179542720. Its totient is φ = 300676147200.

The previous prime is 678140380777. The next prime is 678140380811. The reversal of 678140380808 is 808083041876.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 678140380808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27852416 + ... + 27876752.

It is an arithmetic number, because the mean of its divisors is an integer number (22205930355).

Almost surely, 2^678140380808 is an apocalyptic number.

It is an amenable number.

678140380808 is an abundant number, since it is smaller than the sum of its proper divisors (743039161912).

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

678140380808 is a wasteful number, since it uses less digits than its factorization.

678140380808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32118 (or 32114 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 678140380808 in words is "six hundred seventy-eight billion, one hundred forty million, three hundred eighty thousand, eight hundred eight".