503347663261 has 2 divisors, whose sum is σ = 503347663262. Its totient is φ = 503347663260.

The previous prime is 503347663171. The next prime is 503347663303. The reversal of 503347663261 is 162366743305.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276670740025 + 226676923236 = 525995^2 + 476106^2 .

It is a cyclic number.

It is not a de Polignac number, because 503347663261 - 2¹¹ = 503347661213 is a prime.

It is a super-2 number, since 2×503347663261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503347663361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251673831630 + 251673831631.

It is an arithmetic number, because the mean of its divisors is an integer number (251673831631).

Almost surely, 2^503347663261 is an apocalyptic number.

It is an amenable number.

503347663261 is a deficient number, since it is larger than the sum of its proper divisors (1).

503347663261 is an equidigital number, since it uses as much as digits as its factorization.

503347663261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 46.

The spelling of 503347663261 in words is "five hundred three billion, three hundred forty-seven million, six hundred sixty-three thousand, two hundred sixty-one".