22745570321 has 4 divisors (see below), whose sum is σ = 22745895732. Its totient is φ = 22745244912.

The previous prime is 22745570317. The next prime is 22745570363. The reversal of 22745570321 is 12307554722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20782105600 + 1963464721 = 144160^2 + 44311^2 .

It is a cyclic number.

It is not a de Polignac number, because 22745570321 - 2² = 22745570317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22745570371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10226 + ... + 213531.

It is an arithmetic number, because the mean of its divisors is an integer number (5686473933).

Almost surely, 2^22745570321 is an apocalyptic number.

It is an amenable number.

22745570321 is a deficient number, since it is larger than the sum of its proper divisors (325411).

22745570321 is a wasteful number, since it uses less digits than its factorization.

22745570321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325410.

The product of its (nonzero) digits is 117600, while the sum is 38.

The spelling of 22745570321 in words is "twenty-two billion, seven hundred forty-five million, five hundred seventy thousand, three hundred twenty-one".