22153444450 has 12 divisors (see below), whose sum is σ = 41205406770. Its totient is φ = 8861377760.

The previous prime is 22153444441. The next prime is 22153444457. The reversal of 22153444450 is 5444435122.

It can be written as a sum of positive squares in 3 ways, for example, as 15800238601 + 6353205849 = 125699^2 + 79707^2 .

It is not an unprimeable number, because it can be changed into a prime (22153444457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221534395 + ... + 221534494.

Almost surely, 2^22153444450 is an apocalyptic number.

22153444450 is a deficient number, since it is larger than the sum of its proper divisors (19051962320).

22153444450 is a wasteful number, since it uses less digits than its factorization.

22153444450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443068901 (or 443068896 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 22153444450 its reverse (5444435122), we get a palindrome (27597879572).

The spelling of 22153444450 in words is "twenty-two billion, one hundred fifty-three million, four hundred forty-four thousand, four hundred fifty".