21902383332 has 72 divisors (see below), whose sum is σ = 56881633536. Its totient is φ = 7102579584.

The previous prime is 21902383331. The next prime is 21902383369. The reversal of 21902383332 is 23338320912.

21902383332 is a `hidden beast` number, since 2 + 1 + 90 + 238 + 3 + 332 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (21902383331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243808 + ... + 321320.

It is an arithmetic number, because the mean of its divisors is an integer number (790022688).

Almost surely, 2^21902383332 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 21902383332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28440816768).

21902383332 is an abundant number, since it is smaller than the sum of its proper divisors (34979250204).

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

21902383332 is a wasteful number, since it uses less digits than its factorization.

21902383332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77737 (or 77732 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 21902383332 in words is "twenty-one billion, nine hundred two million, three hundred eighty-three thousand, three hundred thirty-two".