505316386839 has 64 divisors (see below), whose sum is σ = 754061736960. Its totient is φ = 298421760000.

The previous prime is 505316386823. The next prime is 505316386867. The reversal of 505316386839 is 938683613505.

It is not a de Polignac number, because 505316386839 - 2⁴ = 505316386823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505316386139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 295678717 + ... + 295680425.

It is an arithmetic number, because the mean of its divisors is an integer number (11782214640).

Almost surely, 2^505316386839 is an apocalyptic number.

505316386839 is a deficient number, since it is larger than the sum of its proper divisors (248745350121).

505316386839 is a wasteful number, since it uses less digits than its factorization.

505316386839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192.

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 505316386839 in words is "five hundred five billion, three hundred sixteen million, three hundred eighty-six thousand, eight hundred thirty-nine".