22446645312 has 224 divisors, whose sum is σ = 74297300224. Its totient is φ = 5822668800.

The previous prime is 22446645289. The next prime is 22446645341. The reversal of 22446645312 is 21354664422.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1055262 + ... + 1076322.

It is an arithmetic number, because the mean of its divisors is an integer number (331684376).

Almost surely, 2^22446645312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22446645312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37148650112).

22446645312 is an abundant number, since it is smaller than the sum of its proper divisors (51850654912).

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

22446645312 is a wasteful number, since it uses less digits than its factorization.

22446645312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21157 (or 21147 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The spelling of 22446645312 in words is "twenty-two billion, four hundred forty-six million, six hundred forty-five thousand, three hundred twelve".