22543020066 has 96 divisors (see below), whose sum is σ = 53448329088. Its totient is φ = 6318466560.

The previous prime is 22543020029. The next prime is 22543020067. The reversal of 22543020066 is 66002034522.

It is not an unprimeable number, because it can be changed into a prime (22543020067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7763971 + ... + 7766873.

It is an arithmetic number, because the mean of its divisors is an integer number (556753428).

Almost surely, 2^22543020066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22543020066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26724164544).

22543020066 is an abundant number, since it is smaller than the sum of its proper divisors (30905309022).

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

22543020066 is a wasteful number, since it uses less digits than its factorization.

22543020066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 22543020066 its reverse (66002034522), we get a palindrome (88545054588).

The spelling of 22543020066 in words is "twenty-two billion, five hundred forty-three million, twenty thousand, sixty-six".