503261424434449 has 2 divisors, whose sum is σ = 503261424434450. Its totient is φ = 503261424434448.

The previous prime is 503261424434369. The next prime is 503261424434479. The reversal of 503261424434449 is 944434424162305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500982215247424 + 2279209187025 = 22382632^2 + 1509705^2 .

It is a cyclic number.

It is not a de Polignac number, because 503261424434449 - 2¹⁷ = 503261424303377 is a prime.

It is a super-2 number, since 2×503261424434449² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 503261424434449.

It is not a weakly prime, because it can be changed into another prime (503261424434479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251630712217224 + 251630712217225.

It is an arithmetic number, because the mean of its divisors is an integer number (251630712217225).

Almost surely, 2^{503261424434449} is an apocalyptic number.

It is an amenable number.

503261424434449 is a deficient number, since it is larger than the sum of its proper divisors (1).

503261424434449 is an equidigital number, since it uses as much as digits as its factorization.

503261424434449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39813120, while the sum is 55.

The spelling of 503261424434449 in words is "five hundred three trillion, two hundred sixty-one billion, four hundred twenty-four million, four hundred thirty-four thousand, four hundred forty-nine".