520573504369 has 2 divisors, whose sum is σ = 520573504370. Its totient is φ = 520573504368.

The previous prime is 520573504357. The next prime is 520573504427. The reversal of 520573504369 is 963405375025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361276729969 + 159296774400 = 601063^2 + 399120^2 .

It is a cyclic number.

It is not a de Polignac number, because 520573504369 - 2²⁷ = 520439286641 is a prime.

It is a super-2 number, since 2×520573504369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520573504349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260286752184 + 260286752185.

It is an arithmetic number, because the mean of its divisors is an integer number (260286752185).

Almost surely, 2^520573504369 is an apocalyptic number.

It is an amenable number.

520573504369 is a deficient number, since it is larger than the sum of its proper divisors (1).

520573504369 is an equidigital number, since it uses as much as digits as its factorization.

520573504369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 49.

The spelling of 520573504369 in words is "five hundred twenty billion, five hundred seventy-three million, five hundred four thousand, three hundred sixty-nine".