678856054318 has 16 divisors (see below), whose sum is σ = 1096632694080. Its totient is φ = 313312730976.

The previous prime is 678856054301. The next prime is 678856054333. The reversal of 678856054318 is 813450658876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563528 + ... + 1949956.

It is an arithmetic number, because the mean of its divisors is an integer number (68539543380).

Almost surely, 2^678856054318 is an apocalyptic number.

678856054318 is a deficient number, since it is larger than the sum of its proper divisors (417776639762).

678856054318 is a wasteful number, since it uses less digits than its factorization.

678856054318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454011.

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 678856054318 in words is "six hundred seventy-eight billion, eight hundred fifty-six million, fifty-four thousand, three hundred eighteen".