21058888032 has 960 divisors, whose sum is σ = 83055329280. Its totient is φ = 5079158784.

The previous prime is 21058888027. The next prime is 21058888061. The reversal of 21058888032 is 23088885012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 165817953 + ... + 165818079.

It is an arithmetic number, because the mean of its divisors is an integer number (86515968).

Almost surely, 2^21058888032 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 21058888032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41527664640).

21058888032 is an abundant number, since it is smaller than the sum of its proper divisors (61996441248).

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

21058888032 is a wasteful number, since it uses less digits than its factorization.

21058888032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 21058888032 in words is "twenty-one billion, fifty-eight million, eight hundred eighty-eight thousand, thirty-two".