78831025900 has 72 divisors (see below), whose sum is σ = 189673953840. Its totient is φ = 28195872000.

The previous prime is 78831025849. The next prime is 78831025913. The reversal of 78831025900 is 952013887.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520315 + ... + 654514.

It is an arithmetic number, because the mean of its divisors is an integer number (2634360470).

Almost surely, 2^78831025900 is an apocalyptic number.

It is an amenable number.

78831025900 is an abundant number, since it is smaller than the sum of its proper divisors (110842927940).

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

78831025900 is a wasteful number, since it uses less digits than its factorization.

78831025900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174915 (or 1174908 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 78831025900 in words is "seventy-eight billion, eight hundred thirty-one million, twenty-five thousand, nine hundred".