505223404411 has 4 divisors (see below), whose sum is σ = 551152804824. Its totient is φ = 459294004000.

The previous prime is 505223404403. The next prime is 505223404417. The reversal of 505223404411 is 114404322505.

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 505223404411 - 2³ = 505223404403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505223404417) 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, 22964700190 + ... + 22964700211.

It is an arithmetic number, because the mean of its divisors is an integer number (137788201206).

Almost surely, 2^505223404411 is an apocalyptic number.

505223404411 is a deficient number, since it is larger than the sum of its proper divisors (45929400413).

505223404411 is a wasteful number, since it uses less digits than its factorization.

505223404411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45929400412.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 505223404411 its reverse (114404322505), we get a palindrome (619627726916).

The spelling of 505223404411 in words is "five hundred five billion, two hundred twenty-three million, four hundred four thousand, four hundred eleven".