22598445438 has 24 divisors (see below), whose sum is σ = 51092138448. Its totient is φ = 7205301312.

The previous prime is 22598445433. The next prime is 22598445487. The reversal of 22598445438 is 83454489522.

22598445438 is a `hidden beast` number, since 2 + 2 + 5 + 98 + 4 + 4 + 543 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22598445433) 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, 27292395 + ... + 27293222.

It is an arithmetic number, because the mean of its divisors is an integer number (2128839102).

Almost surely, 2^22598445438 is an apocalyptic number.

22598445438 is an abundant number, since it is smaller than the sum of its proper divisors (28493693010).

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

22598445438 is a wasteful number, since it uses less digits than its factorization.

22598445438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54585648 (or 54585645 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 22598445438 in words is "twenty-two billion, five hundred ninety-eight million, four hundred forty-five thousand, four hundred thirty-eight".