505212644403 has 6 divisors (see below), whose sum is σ = 729751597484. Its totient is φ = 336808429596.

The previous prime is 505212644359. The next prime is 505212644413. The reversal of 505212644403 is 304446212505.

505212644403 is a `hidden beast` number, since 5 + 0 + 5 + 2 + 1 + 2 + 644 + 4 + 0 + 3 = 666.

It is not a de Polignac number, because 505212644403 - 2¹² = 505212640307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505212644413) 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 in 5 ways as a sum of consecutive naturals, for example, 28067369125 + ... + 28067369142.

Almost surely, 2^505212644403 is an apocalyptic number.

505212644403 is a deficient number, since it is larger than the sum of its proper divisors (224538953081).

505212644403 is a wasteful number, since it uses less digits than its factorization.

505212644403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56134738273 (or 56134738270 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 505212644403 its reverse (304446212505), we get a palindrome (809658856908).

The spelling of 505212644403 in words is "five hundred five billion, two hundred twelve million, six hundred forty-four thousand, four hundred three".