84979855584 has 144 divisors (see below), whose sum is σ = 268646361984. Its totient is φ = 25304140800.

The previous prime is 84979855579. The next prime is 84979855619. The reversal of 84979855584 is 48555897948.

84979855584 is a `hidden beast` number, since 8 + 497 + 9 + 8 + 5 + 55 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 250027 + ... + 482154.

It is an arithmetic number, because the mean of its divisors is an integer number (1865599736).

Almost surely, 2^84979855584 is an apocalyptic number.

It is an amenable number.

84979855584 is an abundant number, since it is smaller than the sum of its proper divisors (183666506400).

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

84979855584 is a wasteful number, since it uses less digits than its factorization.

84979855584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732241 (or 732230 counting only the distinct ones).

The product of its digits is 580608000, while the sum is 72.

The spelling of 84979855584 in words is "eighty-four billion, nine hundred seventy-nine million, eight hundred fifty-five thousand, five hundred eighty-four".