22545144444 has 48 divisors (see below), whose sum is σ = 54346880000. Its totient is φ = 7266654720.

The previous prime is 22545144437. The next prime is 22545144451. The reversal of 22545144444 is 44444154522.

It is an interprime number because it is at equal distance from previous prime (22545144437) and next prime (22545144451).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440367 + ... + 488889.

Almost surely, 2^22545144444 is an apocalyptic number.

It is an amenable number.

22545144444 is an abundant number, since it is smaller than the sum of its proper divisors (31801735556).

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

22545144444 is a wasteful number, since it uses less digits than its factorization.

22545144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49810 (or 49808 counting only the distinct ones).

The product of its digits is 409600, while the sum is 39.

Adding to 22545144444 its reverse (44444154522), we get a palindrome (66989298966).

The spelling of 22545144444 in words is "twenty-two billion, five hundred forty-five million, one hundred forty-four thousand, four hundred forty-four".