22091868416 has 72 divisors (see below), whose sum is σ = 44759675520. Its totient is φ = 10880722944.

The previous prime is 22091868413. The next prime is 22091868479. The reversal of 22091868416 is 61486819022.

It is not an unprimeable number, because it can be changed into a prime (22091868413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11061530 + ... + 11063526.

It is an arithmetic number, because the mean of its divisors is an integer number (621662160).

Almost surely, 2^22091868416 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 22091868416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22379837760).

22091868416 is an abundant number, since it is smaller than the sum of its proper divisors (22667807104).

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

22091868416 is an equidigital number, since it uses as much as digits as its factorization.

22091868416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639 (or 2625 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 22091868416 in words is "twenty-two billion, ninety-one million, eight hundred sixty-eight thousand, four hundred sixteen".