509800457079 has 6 divisors (see below), whose sum is σ = 736378438016. Its totient is φ = 339866971380.

The previous prime is 509800457053. The next prime is 509800457087. The reversal of 509800457079 is 970754008905.

509800457079 is a `hidden beast` number, since 509 + 80 + 0 + 4 + 57 + 0 + 7 + 9 = 666.

It is not a de Polignac number, because 509800457079 - 2²⁸ = 509532021623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509800457039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28322247607 + ... + 28322247624.

Almost surely, 2^509800457079 is an apocalyptic number.

509800457079 is a deficient number, since it is larger than the sum of its proper divisors (226577980937).

509800457079 is a wasteful number, since it uses less digits than its factorization.

509800457079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56644495237 (or 56644495234 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The spelling of 509800457079 in words is "five hundred nine billion, eight hundred million, four hundred fifty-seven thousand, seventy-nine".