513513242351 has 2 divisors, whose sum is σ = 513513242352. Its totient is φ = 513513242350.

The previous prime is 513513242311. The next prime is 513513242369. The reversal of 513513242351 is 153242315315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513513242351 - 2¹⁰ = 513513241327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513513242311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256756621175 + 256756621176.

It is an arithmetic number, because the mean of its divisors is an integer number (256756621176).

Almost surely, 2^513513242351 is an apocalyptic number.

513513242351 is a deficient number, since it is larger than the sum of its proper divisors (1).

513513242351 is an equidigital number, since it uses as much as digits as its factorization.

513513242351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 35.

Adding to 513513242351 its reverse (153242315315), we get a palindrome (666755557666).

The spelling of 513513242351 in words is "five hundred thirteen billion, five hundred thirteen million, two hundred forty-two thousand, three hundred fifty-one".