513240211513 has 2 divisors, whose sum is σ = 513240211514. Its totient is φ = 513240211512.

The previous prime is 513240211489. The next prime is 513240211571. The reversal of 513240211513 is 315112042315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502045936704 + 11194274809 = 708552^2 + 105803^2 .

It is a cyclic number.

It is not a de Polignac number, because 513240211513 - 2²⁵ = 513206657081 is a prime.

It is not a weakly prime, because it can be changed into another prime (513240211313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256620105756 + 256620105757.

It is an arithmetic number, because the mean of its divisors is an integer number (256620105757).

Almost surely, 2^513240211513 is an apocalyptic number.

It is an amenable number.

513240211513 is a deficient number, since it is larger than the sum of its proper divisors (1).

513240211513 is an equidigital number, since it uses as much as digits as its factorization.

513240211513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 513240211513 its reverse (315112042315), we get a palindrome (828352253828).

The spelling of 513240211513 in words is "five hundred thirteen billion, two hundred forty million, two hundred eleven thousand, five hundred thirteen".