22144345566 has 16 divisors (see below), whose sum is σ = 50615647104. Its totient is φ = 6326955864.

The previous prime is 22144345547. The next prime is 22144345589. The reversal of 22144345566 is 66554344122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 527246323 = 22144345566 / (2 + 2 + 1 + 4 + 4 + 3 + 4 + 5 + 5 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263623120 + ... + 263623203.

It is an arithmetic number, because the mean of its divisors is an integer number (3163477944).

Almost surely, 2^22144345566 is an apocalyptic number.

22144345566 is an abundant number, since it is smaller than the sum of its proper divisors (28471301538).

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

22144345566 is a wasteful number, since it uses less digits than its factorization.

22144345566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527246335.

The product of its digits is 691200, while the sum is 42.

Adding to 22144345566 its reverse (66554344122), we get a palindrome (88698689688).

The spelling of 22144345566 in words is "twenty-two billion, one hundred forty-four million, three hundred forty-five thousand, five hundred sixty-six".