678628254816 has 192 divisors, whose sum is σ = 2054278195200. Its totient is φ = 217695195648.

The previous prime is 678628254797. The next prime is 678628254827. The reversal of 678628254816 is 618452826876.

678628254816 is a `hidden beast` number, since 6 + 7 + 8 + 6 + 2 + 82 + 548 + 1 + 6 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7648081 + ... + 7736303.

It is an arithmetic number, because the mean of its divisors is an integer number (10699365600).

Almost surely, 2^678628254816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678628254816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1027139097600).

678628254816 is an abundant number, since it is smaller than the sum of its proper divisors (1375649940384).

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

678628254816 is a wasteful number, since it uses less digits than its factorization.

678628254816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88578 (or 88564 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 678628254816 in words is "six hundred seventy-eight billion, six hundred twenty-eight million, two hundred fifty-four thousand, eight hundred sixteen".