513215603293 has 2 divisors, whose sum is σ = 513215603294. Its totient is φ = 513215603292.

The previous prime is 513215603237. The next prime is 513215603311. The reversal of 513215603293 is 392306512315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275123328484 + 238092274809 = 524522^2 + 487947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513215603293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513215603233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256607801646 + 256607801647.

It is an arithmetic number, because the mean of its divisors is an integer number (256607801647).

Almost surely, 2^513215603293 is an apocalyptic number.

It is an amenable number.

513215603293 is a deficient number, since it is larger than the sum of its proper divisors (1).

513215603293 is an equidigital number, since it uses as much as digits as its factorization.

513215603293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 513215603293 in words is "five hundred thirteen billion, two hundred fifteen million, six hundred three thousand, two hundred ninety-three".