505405464023 has 2 divisors, whose sum is σ = 505405464024. Its totient is φ = 505405464022.

The previous prime is 505405464019. The next prime is 505405464059. The reversal of 505405464023 is 320464504505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505405464023 - 2² = 505405464019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505405460023) 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, 252702732011 + 252702732012.

It is an arithmetic number, because the mean of its divisors is an integer number (252702732012).

Almost surely, 2^505405464023 is an apocalyptic number.

505405464023 is a deficient number, since it is larger than the sum of its proper divisors (1).

505405464023 is an equidigital number, since it uses as much as digits as its factorization.

505405464023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 505405464023 its reverse (320464504505), we get a palindrome (825869968528).

The spelling of 505405464023 in words is "five hundred five billion, four hundred five million, four hundred sixty-four thousand, twenty-three".