505389311717 has 8 divisors (see below), whose sum is σ = 506058784320. Its totient is φ = 504720285120.

The previous prime is 505389311699. The next prime is 505389311729. The reversal of 505389311717 is 717113983505.

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 505389311717 - 2⁶ = 505389311653 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 (505389311747) 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 7 ways as a sum of consecutive naturals, for example, 2187542 + ... + 2407512.

It is an arithmetic number, because the mean of its divisors is an integer number (63257348040).

Almost surely, 2^505389311717 is an apocalyptic number.

It is an amenable number.

505389311717 is a deficient number, since it is larger than the sum of its proper divisors (669472603).

505389311717 is a wasteful number, since it uses less digits than its factorization.

505389311717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223003.

The product of its (nonzero) digits is 793800, while the sum is 50.

The spelling of 505389311717 in words is "five hundred five billion, three hundred eighty-nine million, three hundred eleven thousand, seven hundred seventeen".