84179768520 has 64 divisors (see below), whose sum is σ = 252895752000. Its totient is φ = 22416254208.

The previous prime is 84179768503. The next prime is 84179768537. The reversal of 84179768520 is 2586797148.

It is an interprime number because it is at equal distance from previous prime (84179768503) and next prime (84179768537).

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, 409630 + ... + 579789.

It is an arithmetic number, because the mean of its divisors is an integer number (3951496125).

Almost surely, 2^84179768520 is an apocalyptic number.

It is an amenable number.

84179768520 is an abundant number, since it is smaller than the sum of its proper divisors (168715983480).

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

84179768520 is a wasteful number, since it uses less digits than its factorization.

84179768520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990142 (or 990138 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 84179768520 in words is "eighty-four billion, one hundred seventy-nine million, seven hundred sixty-eight thousand, five hundred twenty".