78489466888 has 32 divisors (see below), whose sum is σ = 178085347200. Its totient is φ = 31659616512.

The previous prime is 78489466787. The next prime is 78489466901. The reversal of 78489466888 is 88866498487.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41222508 + ... + 41224411.

It is an arithmetic number, because the mean of its divisors is an integer number (5565167100).

Almost surely, 2^78489466888 is an apocalyptic number.

It is an amenable number.

78489466888 is an abundant number, since it is smaller than the sum of its proper divisors (99595880312).

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

78489466888 is a wasteful number, since it uses less digits than its factorization.

78489466888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82446949 (or 82446945 counting only the distinct ones).

The product of its digits is 1189085184, while the sum is 76.

The spelling of 78489466888 in words is "seventy-eight billion, four hundred eighty-nine million, four hundred sixty-six thousand, eight hundred eighty-eight".