21883531792 has 80 divisors (see below), whose sum is σ = 47935324800. Its totient is φ = 9621190656.

The previous prime is 21883531783. The next prime is 21883531793. The reversal of 21883531792 is 29713538812.

It is not an unprimeable number, because it can be changed into a prime (21883531793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228334 + ... + 309682.

It is an arithmetic number, because the mean of its divisors is an integer number (599191560).

Almost surely, 2^21883531792 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 21883531792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23967662400).

21883531792 is an abundant number, since it is smaller than the sum of its proper divisors (26051793008).

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

21883531792 is a wasteful number, since it uses less digits than its factorization.

21883531792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81440 (or 81434 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The spelling of 21883531792 in words is "twenty-one billion, eight hundred eighty-three million, five hundred thirty-one thousand, seven hundred ninety-two".