450960531809 has 2 divisors, whose sum is σ = 450960531810. Its totient is φ = 450960531808.

The previous prime is 450960531781. The next prime is 450960531823. The reversal of 450960531809 is 908135069054.

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., 296837549584 + 154122982225 = 544828^2 + 392585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450960531809 is a prime.

It is a super-2 number, since 2×450960531809² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (450960531839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225480265904 + 225480265905.

It is an arithmetic number, because the mean of its divisors is an integer number (225480265905).

Almost surely, 2^450960531809 is an apocalyptic number.

It is an amenable number.

450960531809 is a deficient number, since it is larger than the sum of its proper divisors (1).

450960531809 is an equidigital number, since it uses as much as digits as its factorization.

450960531809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 450960531809 in words is "four hundred fifty billion, nine hundred sixty million, five hundred thirty-one thousand, eight hundred nine".