520265121073 has 2 divisors, whose sum is σ = 520265121074. Its totient is φ = 520265121072.

The previous prime is 520265121059. The next prime is 520265121163. The reversal of 520265121073 is 370121562025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515621652624 + 4643468449 = 718068^2 + 68143^2 .

It is a cyclic number.

It is not a de Polignac number, because 520265121073 - 2⁹ = 520265120561 is a prime.

It is not a weakly prime, because it can be changed into another prime (520265122073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260132560536 + 260132560537.

It is an arithmetic number, because the mean of its divisors is an integer number (260132560537).

Almost surely, 2^520265121073 is an apocalyptic number.

It is an amenable number.

520265121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

520265121073 is an equidigital number, since it uses as much as digits as its factorization.

520265121073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 520265121073 its reverse (370121562025), we get a palindrome (890386683098).

The spelling of 520265121073 in words is "five hundred twenty billion, two hundred sixty-five million, one hundred twenty-one thousand, seventy-three".