84375988728 has 256 divisors, whose sum is σ = 236598067200. Its totient is φ = 24964692480.

The previous prime is 84375988721. The next prime is 84375988751. The reversal of 84375988728 is 82788957348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84375988721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77196150 + ... + 77197242.

It is an arithmetic number, because the mean of its divisors is an integer number (924211200).

Almost surely, 2^84375988728 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 84375988728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118299033600).

84375988728 is an abundant number, since it is smaller than the sum of its proper divisors (152222078472).

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

84375988728 is a wasteful number, since it uses less digits than its factorization.

84375988728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1318 counting only the distinct ones).

The product of its digits is 216760320, while the sum is 69.

The spelling of 84375988728 in words is "eighty-four billion, three hundred seventy-five million, nine hundred eighty-eight thousand, seven hundred twenty-eight".