520498377913 has 2 divisors, whose sum is σ = 520498377914. Its totient is φ = 520498377912.

The previous prime is 520498377907. The next prime is 520498377947. The reversal of 520498377913 is 319773894025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496675381504 + 23822996409 = 704752^2 + 154347^2 .

It is a cyclic number.

It is not a de Polignac number, because 520498377913 - 2⁹ = 520498377401 is a prime.

It is a super-2 number, since 2×520498377913² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520498377983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260249188956 + 260249188957.

It is an arithmetic number, because the mean of its divisors is an integer number (260249188957).

Almost surely, 2^520498377913 is an apocalyptic number.

It is an amenable number.

520498377913 is a deficient number, since it is larger than the sum of its proper divisors (1).

520498377913 is an equidigital number, since it uses as much as digits as its factorization.

520498377913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 520498377913 in words is "five hundred twenty billion, four hundred ninety-eight million, three hundred seventy-seven thousand, nine hundred thirteen".