509728119074 has 4 divisors (see below), whose sum is σ = 764592178614. Its totient is φ = 254864059536.

The previous prime is 509728119073. The next prime is 509728119083. The reversal of 509728119074 is 470911827905.

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

It can be written as a sum of positive squares in only one way, i.e., 503187353449 + 6540765625 = 709357^2 + 80875^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (509728119073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127432029767 + ... + 127432029770.

Almost surely, 2^509728119074 is an apocalyptic number.

509728119074 is a deficient number, since it is larger than the sum of its proper divisors (254864059540).

509728119074 is a wasteful number, since it uses less digits than its factorization.

509728119074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254864059539.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 509728119074 in words is "five hundred nine billion, seven hundred twenty-eight million, one hundred nineteen thousand, seventy-four".