22100045864 has 64 divisors (see below), whose sum is σ = 45251136000. Its totient is φ = 10057282560.

The previous prime is 22100045819. The next prime is 22100045867. The reversal of 22100045864 is 46854000122.

It is a self number, because there is not a number n which added to its sum of digits gives 22100045864.

It is not an unprimeable number, because it can be changed into a prime (22100045867) 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, 8469392 + ... + 8472000.

It is an arithmetic number, because the mean of its divisors is an integer number (707049000).

Almost surely, 2^22100045864 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 22100045864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22625568000).

22100045864 is an abundant number, since it is smaller than the sum of its proper divisors (23151090136).

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

22100045864 is a wasteful number, since it uses less digits than its factorization.

22100045864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738 (or 3734 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 22100045864 its reverse (46854000122), we get a palindrome (68954045986).

The spelling of 22100045864 in words is "twenty-two billion, one hundred million, forty-five thousand, eight hundred sixty-four".