678000520880 has 20 divisors (see below), whose sum is σ = 1576351211232. Its totient is φ = 271200208320.

The previous prime is 678000520861. The next prime is 678000520913. The reversal of 678000520880 is 88025000876.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4237503176 + ... + 4237503335.

Almost surely, 2^678000520880 is an apocalyptic number.

It is an amenable number.

678000520880 is an abundant number, since it is smaller than the sum of its proper divisors (898350690352).

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

678000520880 is a wasteful number, since it uses less digits than its factorization.

678000520880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8475006524 (or 8475006518 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 678000520880 in words is "six hundred seventy-eight billion, five hundred twenty thousand, eight hundred eighty".