22109896590 has 64 divisors (see below), whose sum is σ = 54073440000. Its totient is φ = 5784194304.

The previous prime is 22109896561. The next prime is 22109896591. The reversal of 22109896590 is 9569890122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22109896591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 870714 + ... + 895746.

It is an arithmetic number, because the mean of its divisors is an integer number (844897500).

Almost surely, 2^22109896590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22109896590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27036720000).

22109896590 is an abundant number, since it is smaller than the sum of its proper divisors (31963543410).

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

22109896590 is a wasteful number, since it uses less digits than its factorization.

22109896590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25601.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 22109896590 in words is "twenty-two billion, one hundred nine million, eight hundred ninety-six thousand, five hundred ninety".