505944490823 has 2 divisors, whose sum is σ = 505944490824. Its totient is φ = 505944490822.

The previous prime is 505944490819. The next prime is 505944490867. The reversal of 505944490823 is 328094449505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505944490823 - 2² = 505944490819 is a prime.

It is a super-3 number, since 3×505944490823³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505944490813) 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, 252972245411 + 252972245412.

It is an arithmetic number, because the mean of its divisors is an integer number (252972245412).

Almost surely, 2^505944490823 is an apocalyptic number.

505944490823 is a deficient number, since it is larger than the sum of its proper divisors (1).

505944490823 is an equidigital number, since it uses as much as digits as its factorization.

505944490823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 505944490823 in words is "five hundred five billion, nine hundred forty-four million, four hundred ninety thousand, eight hundred twenty-three".