513507383929 has 2 divisors, whose sum is σ = 513507383930. Its totient is φ = 513507383928.

The previous prime is 513507383881. The next prime is 513507384001. The reversal of 513507383929 is 929383705315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465567405625 + 47939978304 = 682325^2 + 218952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513507383929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513507383929.

It is not a weakly prime, because it can be changed into another prime (513507383629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256753691964 + 256753691965.

It is an arithmetic number, because the mean of its divisors is an integer number (256753691965).

Almost surely, 2^513507383929 is an apocalyptic number.

It is an amenable number.

513507383929 is a deficient number, since it is larger than the sum of its proper divisors (1).

513507383929 is an equidigital number, since it uses as much as digits as its factorization.

513507383929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 513507383929 in words is "five hundred thirteen billion, five hundred seven million, three hundred eighty-three thousand, nine hundred twenty-nine".