505340508173 has 2 divisors, whose sum is σ = 505340508174. Its totient is φ = 505340508172.

The previous prime is 505340508073. The next prime is 505340508187. The reversal of 505340508173 is 371805043505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503676928804 + 1663579369 = 709702^2 + 40787^2 .

It is a cyclic number.

It is not a de Polignac number, because 505340508173 - 2²² = 505336313869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505340508173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505340508073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252670254086 + 252670254087.

It is an arithmetic number, because the mean of its divisors is an integer number (252670254087).

Almost surely, 2^505340508173 is an apocalyptic number.

It is an amenable number.

505340508173 is a deficient number, since it is larger than the sum of its proper divisors (1).

505340508173 is an equidigital number, since it uses as much as digits as its factorization.

505340508173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 505340508173 in words is "five hundred five billion, three hundred forty million, five hundred eight thousand, one hundred seventy-three".