513342361549 has 2 divisors, whose sum is σ = 513342361550. Its totient is φ = 513342361548.

The previous prime is 513342361501. The next prime is 513342361559. The reversal of 513342361549 is 945163243315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510821819524 + 2520542025 = 714718^2 + 50205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513342361549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513342361499 and 513342361508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513342361559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256671180774 + 256671180775.

It is an arithmetic number, because the mean of its divisors is an integer number (256671180775).

Almost surely, 2^513342361549 is an apocalyptic number.

It is an amenable number.

513342361549 is a deficient number, since it is larger than the sum of its proper divisors (1).

513342361549 is an equidigital number, since it uses as much as digits as its factorization.

513342361549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The spelling of 513342361549 in words is "five hundred thirteen billion, three hundred forty-two million, three hundred sixty-one thousand, five hundred forty-nine".