495047331209 has 2 divisors, whose sum is σ = 495047331210. Its totient is φ = 495047331208.

The previous prime is 495047331187. The next prime is 495047331217. The reversal of 495047331209 is 902133740594.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371090525584 + 123956805625 = 609172^2 + 352075^2 .

It is a cyclic number.

It is not a de Polignac number, because 495047331209 - 2²⁸ = 494778895753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (495047331239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247523665604 + 247523665605.

It is an arithmetic number, because the mean of its divisors is an integer number (247523665605).

Almost surely, 2^495047331209 is an apocalyptic number.

It is an amenable number.

495047331209 is a deficient number, since it is larger than the sum of its proper divisors (1).

495047331209 is an equidigital number, since it uses as much as digits as its factorization.

495047331209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 495047331209 in words is "four hundred ninety-five billion, forty-seven million, three hundred thirty-one thousand, two hundred nine".