520935590173 has 2 divisors, whose sum is σ = 520935590174. Its totient is φ = 520935590172.

The previous prime is 520935590171. The next prime is 520935590209. The reversal of 520935590173 is 371095539025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515462253849 + 5473336324 = 717957^2 + 73982^2 .

It is a cyclic number.

It is not a de Polignac number, because 520935590173 - 2¹ = 520935590171 is a prime.

Together with 520935590171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520935590171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260467795086 + 260467795087.

It is an arithmetic number, because the mean of its divisors is an integer number (260467795087).

Almost surely, 2^520935590173 is an apocalyptic number.

It is an amenable number.

520935590173 is a deficient number, since it is larger than the sum of its proper divisors (1).

520935590173 is an equidigital number, since it uses as much as digits as its factorization.

520935590173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1275750, while the sum is 49.

The spelling of 520935590173 in words is "five hundred twenty billion, nine hundred thirty-five million, five hundred ninety thousand, one hundred seventy-three".