22450223645 has 4 divisors (see below), whose sum is σ = 26940268380. Its totient is φ = 17960178912.

The previous prime is 22450223639. The next prime is 22450223657. The reversal of 22450223645 is 54632205422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2683550809 + 19766672836 = 51803^2 + 140594^2 .

It is a cyclic number.

It is not a de Polignac number, because 22450223645 - 2⁶ = 22450223581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245022360 + ... + 2245022369.

It is an arithmetic number, because the mean of its divisors is an integer number (6735067095).

Almost surely, 2^22450223645 is an apocalyptic number.

It is an amenable number.

22450223645 is a deficient number, since it is larger than the sum of its proper divisors (4490044735).

22450223645 is an equidigital number, since it uses as much as digits as its factorization.

22450223645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490044734.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 22450223645 in words is "twenty-two billion, four hundred fifty million, two hundred twenty-three thousand, six hundred forty-five".