255628564658563 has 2 divisors, whose sum is σ = 255628564658564. Its totient is φ = 255628564658562.

The previous prime is 255628564658527. The next prime is 255628564658569. The reversal of 255628564658563 is 365856465826552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255628564658563 - 2¹⁷ = 255628564527491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255628564658563.

It is not a weakly prime, because it can be changed into another prime (255628564658569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127814282329281 + 127814282329282.

It is an arithmetic number, because the mean of its divisors is an integer number (127814282329282).

Almost surely, 2^{255628564658563} is an apocalyptic number.

255628564658563 is a deficient number, since it is larger than the sum of its proper divisors (1).

255628564658563 is an equidigital number, since it uses as much as digits as its factorization.

255628564658563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600000, while the sum is 76.

The spelling of 255628564658563 in words is "two hundred fifty-five trillion, six hundred twenty-eight billion, five hundred sixty-four million, six hundred fifty-eight thousand, five hundred sixty-three".