2256323566563 has 36 divisors (see below), whose sum is σ = 3615219768160. Its totient is φ = 1354923171360.

The previous prime is 2256323566507. The next prime is 2256323566589. The reversal of 2256323566563 is 3656653236522.

2256323566563 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 3 + 23 + 56 + 6 + 563 = 666.

It is not a de Polignac number, because 2256323566563 - 2⁸ = 2256323566307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2256323566463) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9385531 + ... + 9622932.

Almost surely, 2^{2256323566563} is an apocalyptic number.

2256323566563 is a deficient number, since it is larger than the sum of its proper divisors (1358896201597).

2256323566563 is a wasteful number, since it uses less digits than its factorization.

2256323566563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19008600 (or 19008586 counting only the distinct ones).

The product of its digits is 34992000, while the sum is 54.

The spelling of 2256323566563 in words is "two trillion, two hundred fifty-six billion, three hundred twenty-three million, five hundred sixty-six thousand, five hundred sixty-three".