513164504309 has 2 divisors, whose sum is σ = 513164504310. Its totient is φ = 513164504308.

The previous prime is 513164504249. The next prime is 513164504401. The reversal of 513164504309 is 903405461315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374761903684 + 138402600625 = 612178^2 + 372025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513164504309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513164594309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256582252154 + 256582252155.

It is an arithmetic number, because the mean of its divisors is an integer number (256582252155).

Almost surely, 2^513164504309 is an apocalyptic number.

It is an amenable number.

513164504309 is a deficient number, since it is larger than the sum of its proper divisors (1).

513164504309 is an equidigital number, since it uses as much as digits as its factorization.

513164504309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 513164504309 in words is "five hundred thirteen billion, one hundred sixty-four million, five hundred four thousand, three hundred nine".