450815038409 has 2 divisors, whose sum is σ = 450815038410. Its totient is φ = 450815038408.

The previous prime is 450815038361. The next prime is 450815038411. The reversal of 450815038409 is 904830518054.

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., 290659000384 + 160156038025 = 539128^2 + 400195^2 .

It is a cyclic number.

It is not a de Polignac number, because 450815038409 - 2³² = 446520071113 is a prime.

It is a Sophie Germain prime.

Together with 450815038411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (450815038469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225407519204 + 225407519205.

It is an arithmetic number, because the mean of its divisors is an integer number (225407519205).

Almost surely, 2^450815038409 is an apocalyptic number.

It is an amenable number.

450815038409 is a deficient number, since it is larger than the sum of its proper divisors (1).

450815038409 is an equidigital number, since it uses as much as digits as its factorization.

450815038409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 450815038409 in words is "four hundred fifty billion, eight hundred fifteen million, thirty-eight thousand, four hundred nine".