505323715879 has 4 divisors (see below), whose sum is σ = 506755228176. Its totient is φ = 503892203584.

The previous prime is 505323715873. The next prime is 505323715933. The reversal of 505323715879 is 978517323505.

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 505323715879 - 2¹⁷ = 505323584807 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 (505323715873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715755619 + ... + 715756324.

It is an arithmetic number, because the mean of its divisors is an integer number (126688807044).

Almost surely, 2^505323715879 is an apocalyptic number.

505323715879 is a deficient number, since it is larger than the sum of its proper divisors (1431512297).

505323715879 is a wasteful number, since it uses less digits than its factorization.

505323715879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431512296.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 505323715879 in words is "five hundred five billion, three hundred twenty-three million, seven hundred fifteen thousand, eight hundred seventy-nine".