505404555323 has 8 divisors (see below), whose sum is σ = 545564138400. Its totient is φ = 466760428288.

The previous prime is 505404555311. The next prime is 505404555347. The reversal of 505404555323 is 323555404505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505404555323 - 2⁸ = 505404555067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505404555353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378863318 + ... + 378864651.

It is an arithmetic number, because the mean of its divisors is an integer number (68195517300).

Almost surely, 2^505404555323 is an apocalyptic number.

505404555323 is a deficient number, since it is larger than the sum of its proper divisors (40159583077).

505404555323 is a wasteful number, since it uses less digits than its factorization.

505404555323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757728021.

The product of its (nonzero) digits is 900000, while the sum is 41.

Adding to 505404555323 its reverse (323555404505), we get a palindrome (828959959828).

The spelling of 505404555323 in words is "five hundred five billion, four hundred four million, five hundred fifty-five thousand, three hundred twenty-three".