520959374129 has 2 divisors, whose sum is σ = 520959374130. Its totient is φ = 520959374128.

The previous prime is 520959374101. The next prime is 520959374147. The reversal of 520959374129 is 921473959025.

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., 369996042529 + 150963331600 = 608273^2 + 388540^2 .

It is a cyclic number.

It is not a de Polignac number, because 520959374129 - 2¹² = 520959370033 is a prime.

It is not a weakly prime, because it can be changed into another prime (520959374029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260479687064 + 260479687065.

It is an arithmetic number, because the mean of its divisors is an integer number (260479687065).

Almost surely, 2^520959374129 is an apocalyptic number.

It is an amenable number.

520959374129 is a deficient number, since it is larger than the sum of its proper divisors (1).

520959374129 is an equidigital number, since it uses as much as digits as its factorization.

520959374129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 520959374129 in words is "five hundred twenty billion, nine hundred fifty-nine million, three hundred seventy-four thousand, one hundred twenty-nine".