509723128204 has 24 divisors (see below), whose sum is σ = 894632010048. Its totient is φ = 254114913360.

The previous prime is 509723128199. The next prime is 509723128217. The reversal of 509723128204 is 402821327905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090019 + ... + 2321125.

It is an arithmetic number, because the mean of its divisors is an integer number (37276333752).

Almost surely, 2^509723128204 is an apocalyptic number.

It is an amenable number.

509723128204 is a deficient number, since it is larger than the sum of its proper divisors (384908881844).

509723128204 is a wasteful number, since it uses less digits than its factorization.

509723128204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232725 (or 232723 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 509723128204 in words is "five hundred nine billion, seven hundred twenty-three million, one hundred twenty-eight thousand, two hundred four".