509534311804 has 24 divisors (see below), whose sum is σ = 1019112654560. Its totient is φ = 218362412736.

The previous prime is 509534311789. The next prime is 509534311817. The reversal of 509534311804 is 408113435905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287134 + ... + 1049530.

Almost surely, 2^509534311804 is an apocalyptic number.

It is an amenable number.

509534311804 is an abundant number, since it is smaller than the sum of its proper divisors (509578342756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509534311804 is a wasteful number, since it uses less digits than its factorization.

509534311804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786277 (or 786275 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 509534311804 in words is "five hundred nine billion, five hundred thirty-four million, three hundred eleven thousand, eight hundred four".