22745204164 has 12 divisors (see below), whose sum is σ = 39809238588. Its totient is φ = 11371136000.

The previous prime is 22745204143. The next prime is 22745204189. The reversal of 22745204164 is 46140254722.

It can be written as a sum of positive squares in 2 ways, for example, as 12767192064 + 9978012100 = 112992^2 + 99890^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331237 + ... + 393964.

It is an arithmetic number, because the mean of its divisors is an integer number (3317436549).

Almost surely, 2^22745204164 is an apocalyptic number.

It is an amenable number.

22745204164 is a deficient number, since it is larger than the sum of its proper divisors (17064034424).

22745204164 is a wasteful number, since it uses less digits than its factorization.

22745204164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733046 (or 733044 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 37.

Adding to 22745204164 its reverse (46140254722), we get a palindrome (68885458886).

The spelling of 22745204164 in words is "twenty-two billion, seven hundred forty-five million, two hundred four thousand, one hundred sixty-four".