78641111800 has 48 divisors (see below), whose sum is σ = 185939605800. Its totient is φ = 30923280000.

The previous prime is 78641111797. The next prime is 78641111827. The reversal of 78641111800 is 811114687.

It is a self number, because there is not a number n which added to its sum of digits gives 78641111800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3320451 + ... + 3344050.

Almost surely, 2^78641111800 is an apocalyptic number.

It is an amenable number.

78641111800 is an abundant number, since it is smaller than the sum of its proper divisors (107298494000).

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

78641111800 is a wasteful number, since it uses less digits than its factorization.

78641111800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664576 (or 6664567 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 78641111800 in words is "seventy-eight billion, six hundred forty-one million, one hundred eleven thousand, eight hundred".