513761013605 has 24 divisors (see below), whose sum is σ = 717216365592. Its totient is φ = 352269722112.

The previous prime is 513761013583. The next prime is 513761013611. The reversal of 513761013605 is 506310167315.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85152492481 + 428608521124 = 291809^2 + 654682^2 .

It is not a de Polignac number, because 513761013605 - 2⁶ = 513761013541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4111529 + ... + 4234641.

It is an arithmetic number, because the mean of its divisors is an integer number (29884015233).

Almost surely, 2^513761013605 is an apocalyptic number.

It is an amenable number.

513761013605 is a deficient number, since it is larger than the sum of its proper divisors (203455351987).

513761013605 is a wasteful number, since it uses less digits than its factorization.

513761013605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140165 (or 140158 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 513761013605 in words is "five hundred thirteen billion, seven hundred sixty-one million, thirteen thousand, six hundred five".