84990819584 has 144 divisors (see below), whose sum is σ = 189930801984. Its totient is φ = 37623398400.

The previous prime is 84990819577. The next prime is 84990819607. The reversal of 84990819584 is 48591809948.

It is a self number, because there is not a number n which added to its sum of digits gives 84990819584.

It is a congruent number.

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, 52430294 + ... + 52431914.

Almost surely, 2^84990819584 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 84990819584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94965400992).

84990819584 is an abundant number, since it is smaller than the sum of its proper divisors (104939982400).

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

84990819584 is a wasteful number, since it uses less digits than its factorization.

84990819584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 65.

The spelling of 84990819584 in words is "eighty-four billion, nine hundred ninety million, eight hundred nineteen thousand, five hundred eighty-four".