503256361217 has 2 divisors, whose sum is σ = 503256361218. Its totient is φ = 503256361216.

The previous prime is 503256361193. The next prime is 503256361219. The reversal of 503256361217 is 712163652305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378226230001 + 125030131216 = 615001^2 + 353596^2 .

It is a cyclic number.

It is not a de Polignac number, because 503256361217 - 2³⁸ = 228378454273 is a prime.

Together with 503256361219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (503256361219) by changing a digit.

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 as a sum of consecutive naturals, namely, 251628180608 + 251628180609.

It is an arithmetic number, because the mean of its divisors is an integer number (251628180609).

Almost surely, 2^503256361217 is an apocalyptic number.

It is an amenable number.

503256361217 is a deficient number, since it is larger than the sum of its proper divisors (1).

503256361217 is an equidigital number, since it uses as much as digits as its factorization.

503256361217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 503256361217 in words is "five hundred three billion, two hundred fifty-six million, three hundred sixty-one thousand, two hundred seventeen".