520893616361 has 2 divisors, whose sum is σ = 520893616362. Its totient is φ = 520893616360.

The previous prime is 520893616301. The next prime is 520893616403. The reversal of 520893616361 is 163616398025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460939155625 + 59954460736 = 678925^2 + 244856^2 .

It is a cyclic number.

It is not a de Polignac number, because 520893616361 - 2²² = 520889422057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (520893616301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260446808180 + 260446808181.

It is an arithmetic number, because the mean of its divisors is an integer number (260446808181).

Almost surely, 2^520893616361 is an apocalyptic number.

It is an amenable number.

520893616361 is a deficient number, since it is larger than the sum of its proper divisors (1).

520893616361 is an equidigital number, since it uses as much as digits as its factorization.

520893616361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 520893616361 in words is "five hundred twenty billion, eight hundred ninety-three million, six hundred sixteen thousand, three hundred sixty-one".