21852688032 has 240 divisors, whose sum is σ = 73593539712. Its totient is φ = 6231375360.

The previous prime is 21852688027. The next prime is 21852688049. The reversal of 21852688032 is 23088625812.

21852688032 is a `hidden beast` number, since 2 + 18 + 526 + 8 + 80 + 32 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13480182 + ... + 13481802.

Almost surely, 2^21852688032 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 21852688032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36796769856).

21852688032 is an abundant number, since it is smaller than the sum of its proper divisors (51740851680).

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

21852688032 is a wasteful number, since it uses less digits than its factorization.

21852688032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 21852688032 in words is "twenty-one billion, eight hundred fifty-two million, six hundred eighty-eight thousand, thirty-two".