21652348032 has 512 divisors, whose sum is σ = 75672576000. Its totient is φ = 5967323136.

The previous prime is 21652348019. The next prime is 21652348043. The reversal of 21652348032 is 23084325612.

21652348032 is a `hidden beast` number, since 21 + 6 + 523 + 4 + 80 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155772219 + ... + 155772357.

It is an arithmetic number, because the mean of its divisors is an integer number (147798000).

Almost surely, 2^21652348032 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 21652348032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37836288000).

21652348032 is an abundant number, since it is smaller than the sum of its proper divisors (54020227968).

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

21652348032 is a wasteful number, since it uses less digits than its factorization.

21652348032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 21652348032 in words is "twenty-one billion, six hundred fifty-two million, three hundred forty-eight thousand, thirty-two".