509441344798 has 4 divisors (see below), whose sum is σ = 764162017200. Its totient is φ = 254720672398.

The previous prime is 509441344771. The next prime is 509441344799. The reversal of 509441344798 is 897443144905.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509441344799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127360336198 + ... + 127360336201.

It is an arithmetic number, because the mean of its divisors is an integer number (191040504300).

Almost surely, 2^509441344798 is an apocalyptic number.

509441344798 is a deficient number, since it is larger than the sum of its proper divisors (254720672402).

509441344798 is a wasteful number, since it uses less digits than its factorization.

509441344798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254720672401.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 509441344798 in words is "five hundred nine billion, four hundred forty-one million, three hundred forty-four thousand, seven hundred ninety-eight".