21796895328 has 144 divisors (see below), whose sum is σ = 63128192400. Its totient is φ = 6579935232.

The previous prime is 21796895299. The next prime is 21796895377. The reversal of 21796895328 is 82359869712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 847198 + ... + 872546.

It is an arithmetic number, because the mean of its divisors is an integer number (438390225).

Almost surely, 2^21796895328 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 21796895328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31564096200).

21796895328 is an abundant number, since it is smaller than the sum of its proper divisors (41331297072).

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

21796895328 is a wasteful number, since it uses less digits than its factorization.

21796895328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25441 (or 25420 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 21796895328 in words is "twenty-one billion, seven hundred ninety-six million, eight hundred ninety-five thousand, three hundred twenty-eight".