509534311847 has 4 divisors (see below), whose sum is σ = 555855612936. Its totient is φ = 463213010760.

The previous prime is 509534311817. The next prime is 509534311849. The reversal of 509534311847 is 748113435905.

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 509534311847 - 2⁸ = 509534311591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509534311795 and 509534311804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509534311849) 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, 23160650528 + ... + 23160650549.

It is an arithmetic number, because the mean of its divisors is an integer number (138963903234).

Almost surely, 2^509534311847 is an apocalyptic number.

509534311847 is a deficient number, since it is larger than the sum of its proper divisors (46321301089).

509534311847 is a wasteful number, since it uses less digits than its factorization.

509534311847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46321301088.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 509534311847 in words is "five hundred nine billion, five hundred thirty-four million, three hundred eleven thousand, eight hundred forty-seven".