509369750873 has 4 divisors (see below), whose sum is σ = 509382261300. Its totient is φ = 509357240448.

The previous prime is 509369750849. The next prime is 509369750881. The reversal of 509369750873 is 378057963905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 418281682009 + 91088068864 = 646747^2 + 301808^2 .

It is a cyclic number.

It is not a de Polignac number, because 509369750873 - 2²² = 509365556569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509369750893) 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, 6193940 + ... + 6275637.

It is an arithmetic number, because the mean of its divisors is an integer number (127345565325).

Almost surely, 2^509369750873 is an apocalyptic number.

It is an amenable number.

509369750873 is a deficient number, since it is larger than the sum of its proper divisors (12510427).

509369750873 is a wasteful number, since it uses less digits than its factorization.

509369750873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12510426.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 509369750873 in words is "five hundred nine billion, three hundred sixty-nine million, seven hundred fifty thousand, eight hundred seventy-three".