255628564664659 has 2 divisors, whose sum is σ = 255628564664660. Its totient is φ = 255628564664658.

The previous prime is 255628564664653. The next prime is 255628564664717. The reversal of 255628564664659 is 956466465826552.

255628564664659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255628564664659 is a prime.

It is a super-2 number, since 2×255628564664659² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255628564664653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127814282332329 + 127814282332330.

It is an arithmetic number, because the mean of its divisors is an integer number (127814282332330).

Almost surely, 2^{255628564664659} is an apocalyptic number.

255628564664659 is a deficient number, since it is larger than the sum of its proper divisors (1).

255628564664659 is an equidigital number, since it uses as much as digits as its factorization.

255628564664659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880000, while the sum is 79.

The spelling of 255628564664659 in words is "two hundred fifty-five trillion, six hundred twenty-eight billion, five hundred sixty-four million, six hundred sixty-four thousand, six hundred fifty-nine".