513165423293 has 2 divisors, whose sum is σ = 513165423294. Its totient is φ = 513165423292.

The previous prime is 513165423271. The next prime is 513165423377. The reversal of 513165423293 is 392324561315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332469866404 + 180695556889 = 576602^2 + 425083^2 .

It is a cyclic number.

It is not a de Polignac number, because 513165423293 - 2¹⁸ = 513165161149 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 (513165423193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256582711646 + 256582711647.

It is an arithmetic number, because the mean of its divisors is an integer number (256582711647).

Almost surely, 2^513165423293 is an apocalyptic number.

It is an amenable number.

513165423293 is a deficient number, since it is larger than the sum of its proper divisors (1).

513165423293 is an equidigital number, since it uses as much as digits as its factorization.

513165423293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 44.

The spelling of 513165423293 in words is "five hundred thirteen billion, one hundred sixty-five million, four hundred twenty-three thousand, two hundred ninety-three".