509079229985 has 16 divisors (see below), whose sum is σ = 625873167360. Its totient is φ = 397280472960.

The previous prime is 509079229963. The next prime is 509079230039. The reversal of 509079229985 is 589922970905.

It is a de Polignac number, because none of the positive numbers 2^k-509079229985 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1533824 + ... + 1835966.

It is an arithmetic number, because the mean of its divisors is an integer number (39117072960).

Almost surely, 2^509079229985 is an apocalyptic number.

It is an amenable number.

509079229985 is a deficient number, since it is larger than the sum of its proper divisors (116793937375).

509079229985 is a wasteful number, since it uses less digits than its factorization.

509079229985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310408.

The product of its (nonzero) digits is 36741600, while the sum is 65.

The spelling of 509079229985 in words is "five hundred nine billion, seventy-nine million, two hundred twenty-nine thousand, nine hundred eighty-five".