678933350872 has 32 divisors (see below), whose sum is σ = 1482307322400. Its totient is φ = 285481407744.

The previous prime is 678933350869. The next prime is 678933350897. The reversal of 678933350872 is 278053339876.

It is a self number, because there is not a number n which added to its sum of digits gives 678933350872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114372597 + ... + 114378532.

It is an arithmetic number, because the mean of its divisors is an integer number (46322103825).

Almost surely, 2^678933350872 is an apocalyptic number.

It is an amenable number.

678933350872 is an abundant number, since it is smaller than the sum of its proper divisors (803373971528).

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

678933350872 is a wasteful number, since it uses less digits than its factorization.

678933350872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228751195 (or 228751191 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 678933350872 in words is "six hundred seventy-eight billion, nine hundred thirty-three million, three hundred fifty thousand, eight hundred seventy-two".