450648413909 has 2 divisors, whose sum is σ = 450648413910. Its totient is φ = 450648413908.

The previous prime is 450648413861. The next prime is 450648413911. The reversal of 450648413909 is 909314846054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447153003025 + 3495410884 = 668695^2 + 59122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450648413909 is a prime.

Together with 450648413911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450648413989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225324206954 + 225324206955.

It is an arithmetic number, because the mean of its divisors is an integer number (225324206955).

Almost surely, 2^450648413909 is an apocalyptic number.

It is an amenable number.

450648413909 is a deficient number, since it is larger than the sum of its proper divisors (1).

450648413909 is an equidigital number, since it uses as much as digits as its factorization.

450648413909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 450648413909 in words is "four hundred fifty billion, six hundred forty-eight million, four hundred thirteen thousand, nine hundred nine".