678953639500 has 24 divisors (see below), whose sum is σ = 1482834749760. Its totient is φ = 271581455600.

The previous prime is 678953639491. The next prime is 678953639549. The reversal of 678953639500 is 5936359876.

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, 678953140 + ... + 678954139.

It is an arithmetic number, because the mean of its divisors is an integer number (61784781240).

Almost surely, 2^678953639500 is an apocalyptic number.

It is an amenable number.

678953639500 is an abundant number, since it is smaller than the sum of its proper divisors (803881110260).

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

678953639500 is a wasteful number, since it uses less digits than its factorization.

678953639500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357907298 (or 1357907286 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 678953639500 in words is "six hundred seventy-eight billion, nine hundred fifty-three million, six hundred thirty-nine thousand, five hundred".