22563663442645 has 8 divisors (see below), whose sum is σ = 29159195833656. Its totient is φ = 16662397619136.

The previous prime is 22563663442631. The next prime is 22563663442667. The reversal of 22563663442645 is 54624436636522.

It can be written as a sum of positive squares in 4 ways, for example, as 2435528541924 + 20128134900721 = 1560618^2 + 4486439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22563663442645 - 2²³ = 22563655054037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22563663442645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173566641802 + ... + 173566641931.

It is an arithmetic number, because the mean of its divisors is an integer number (3644899479207).

Almost surely, 2^{22563663442645} is an apocalyptic number.

It is an amenable number.

22563663442645 is a deficient number, since it is larger than the sum of its proper divisors (6595532391011).

22563663442645 is a wasteful number, since it uses less digits than its factorization.

22563663442645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347133283751.

The product of its digits is 149299200, while the sum is 58.

The spelling of 22563663442645 in words is "twenty-two trillion, five hundred sixty-three billion, six hundred sixty-three million, four hundred forty-two thousand, six hundred forty-five".