22446664422 has 128 divisors (see below), whose sum is σ = 56996352000. Its totient is φ = 5734665216.

The previous prime is 22446664399. The next prime is 22446664433.

It is a happy number.

22446664422 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4825954 + ... + 4830602.

It is an arithmetic number, because the mean of its divisors is an integer number (445284000).

Almost surely, 2^22446664422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22446664422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28498176000).

22446664422 is an abundant number, since it is smaller than the sum of its proper divisors (34549687578).

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

22446664422 is a wasteful number, since it uses less digits than its factorization.

22446664422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950.

The product of its digits is 884736, while the sum is 42.

It can be divided in two parts, 2244 and 6664422, that added together give a palindrome (6666666).

The spelling of 22446664422 in words is "twenty-two billion, four hundred forty-six million, six hundred sixty-four thousand, four hundred twenty-two".