515049859613 has 2 divisors, whose sum is σ = 515049859614. Its totient is φ = 515049859612.

The previous prime is 515049859589. The next prime is 515049859633. The reversal of 515049859613 is 316958940515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474165828409 + 40884031204 = 688597^2 + 202198^2 .

It is a cyclic number.

It is not a de Polignac number, because 515049859613 - 2³⁰ = 513976117789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515049859633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257524929806 + 257524929807.

It is an arithmetic number, because the mean of its divisors is an integer number (257524929807).

Almost surely, 2^515049859613 is an apocalyptic number.

It is an amenable number.

515049859613 is a deficient number, since it is larger than the sum of its proper divisors (1).

515049859613 is an equidigital number, since it uses as much as digits as its factorization.

515049859613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 56.

The spelling of 515049859613 in words is "five hundred fifteen billion, forty-nine million, eight hundred fifty-nine thousand, six hundred thirteen".