505123044505603 has 2 divisors, whose sum is σ = 505123044505604. Its totient is φ = 505123044505602.

The previous prime is 505123044505571. The next prime is 505123044505609. The reversal of 505123044505603 is 306505440321505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505123044505603 - 2⁵ = 505123044505571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505123044505603.

It is not a weakly prime, because it can be changed into another prime (505123044505609) 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, 252561522252801 + 252561522252802.

It is an arithmetic number, because the mean of its divisors is an integer number (252561522252802).

Almost surely, 2^{505123044505603} is an apocalyptic number.

505123044505603 is a deficient number, since it is larger than the sum of its proper divisors (1).

505123044505603 is an equidigital number, since it uses as much as digits as its factorization.

505123044505603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 505123044505603 in words is "five hundred five trillion, one hundred twenty-three billion, forty-four million, five hundred five thousand, six hundred three".