84578311536 has 80 divisors (see below), whose sum is σ = 222301843200. Its totient is φ = 27701883904.

The previous prime is 84578311513. The next prime is 84578311567. The reversal of 84578311536 is 63511387548.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7382965 + ... + 7394411.

It is an arithmetic number, because the mean of its divisors is an integer number (2778773040).

Almost surely, 2^84578311536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84578311536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111150921600).

84578311536 is an abundant number, since it is smaller than the sum of its proper divisors (137723531664).

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

84578311536 is a wasteful number, since it uses less digits than its factorization.

84578311536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126 (or 14120 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The spelling of 84578311536 in words is "eighty-four billion, five hundred seventy-eight million, three hundred eleven thousand, five hundred thirty-six".