520969903957 has 2 divisors, whose sum is σ = 520969903958. Its totient is φ = 520969903956.

The previous prime is 520969903933. The next prime is 520969903981. The reversal of 520969903957 is 759309969025.

It is a balanced prime because it is at equal distance from previous prime (520969903933) and next prime (520969903981).

It can be written as a sum of positive squares in only one way, i.e., 408319722001 + 112650181956 = 638999^2 + 335634^2 .

It is a cyclic number.

It is not a de Polignac number, because 520969903957 - 2²⁷ = 520835686229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520969903997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260484951978 + 260484951979.

It is an arithmetic number, because the mean of its divisors is an integer number (260484951979).

Almost surely, 2^520969903957 is an apocalyptic number.

It is an amenable number.

520969903957 is a deficient number, since it is larger than the sum of its proper divisors (1).

520969903957 is an equidigital number, since it uses as much as digits as its factorization.

520969903957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41334300, while the sum is 64.

The spelling of 520969903957 in words is "five hundred twenty billion, nine hundred sixty-nine million, nine hundred three thousand, nine hundred fifty-seven".