509304722977 has 4 divisors (see below), whose sum is σ = 509318348080. Its totient is φ = 509291097876.

The previous prime is 509304722959. The next prime is 509304722987. The reversal of 509304722977 is 779227403905.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 509304722977 - 2¹¹ = 509304720929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509304722987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6756327 + ... + 6831292.

It is an arithmetic number, because the mean of its divisors is an integer number (127329587020).

Almost surely, 2^509304722977 is an apocalyptic number.

It is an amenable number.

509304722977 is a deficient number, since it is larger than the sum of its proper divisors (13625103).

509304722977 is a wasteful number, since it uses less digits than its factorization.

509304722977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625102.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 509304722977 in words is "five hundred nine billion, three hundred four million, seven hundred twenty-two thousand, nine hundred seventy-seven".