22548331990 has 24 divisors (see below), whose sum is σ = 43114912992. Its totient is φ = 8488782720.

The previous prime is 22548331987. The next prime is 22548331991. The reversal of 22548331990 is 9913384522.

It is a self number, because there is not a number n which added to its sum of digits gives 22548331990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22548331991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3898206 + ... + 3903985.

It is an arithmetic number, because the mean of its divisors is an integer number (1796454708).

Almost surely, 2^22548331990 is an apocalyptic number.

22548331990 is a deficient number, since it is larger than the sum of its proper divisors (20566581002).

22548331990 is a wasteful number, since it uses less digits than its factorization.

22548331990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802232 (or 7802215 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 22548331990 in words is "twenty-two billion, five hundred forty-eight million, three hundred thirty-one thousand, nine hundred ninety".