505223405263 has 4 divisors (see below), whose sum is σ = 534942429120. Its totient is φ = 475504381408.

The previous prime is 505223405251. The next prime is 505223405339. The reversal of 505223405263 is 362504322505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505223405263 - 2²⁹ = 504686534351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505223805263) 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 in 3 ways as a sum of consecutive naturals, for example, 14859511903 + ... + 14859511936.

It is an arithmetic number, because the mean of its divisors is an integer number (133735607280).

Almost surely, 2^505223405263 is an apocalyptic number.

505223405263 is a deficient number, since it is larger than the sum of its proper divisors (29719023857).

505223405263 is a wasteful number, since it uses less digits than its factorization.

505223405263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29719023856.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 505223405263 its reverse (362504322505), we get a palindrome (867727727768).

The spelling of 505223405263 in words is "five hundred five billion, two hundred twenty-three million, four hundred five thousand, two hundred sixty-three".