84547978764 has 48 divisors (see below), whose sum is σ = 197703475200. Its totient is φ = 28122034176.

The previous prime is 84547978717. The next prime is 84547978829. The reversal of 84547978764 is 46787974548.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13275909 + ... + 13282275.

It is an arithmetic number, because the mean of its divisors is an integer number (4118822400).

Almost surely, 2^84547978764 is an apocalyptic number.

It is an amenable number.

84547978764 is an abundant number, since it is smaller than the sum of its proper divisors (113155496436).

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

84547978764 is a wasteful number, since it uses less digits than its factorization.

84547978764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8582 (or 8580 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 69.

The spelling of 84547978764 in words is "eighty-four billion, five hundred forty-seven million, nine hundred seventy-eight thousand, seven hundred sixty-four".