22111566648 has 32 divisors (see below), whose sum is σ = 55714191360. Its totient is φ = 7312485600.

The previous prime is 22111566643. The next prime is 22111566677. The reversal of 22111566648 is 84666511122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111566643) 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, 3624178 + ... + 3630273.

It is an arithmetic number, because the mean of its divisors is an integer number (1741068480).

Almost surely, 2^22111566648 is an apocalyptic number.

It is an amenable number.

22111566648 is an abundant number, since it is smaller than the sum of its proper divisors (33602624712).

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

22111566648 is a wasteful number, since it uses less digits than its factorization.

22111566648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254587 (or 7254583 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The spelling of 22111566648 in words is "twenty-two billion, one hundred eleven million, five hundred sixty-six thousand, six hundred forty-eight".