450257077468789 has 2 divisors, whose sum is σ = 450257077468790. Its totient is φ = 450257077468788.

The previous prime is 450257077468553. The next prime is 450257077468819. The reversal of 450257077468789 is 987864770752054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424955754947025 + 25301322521764 = 20614455^2 + 5030042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450257077468789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450257077469789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225128538734394 + 225128538734395.

It is an arithmetic number, because the mean of its divisors is an integer number (225128538734395).

Almost surely, 2^{450257077468789} is an apocalyptic number.

It is an amenable number.

450257077468789 is a deficient number, since it is larger than the sum of its proper divisors (1).

450257077468789 is an equidigital number, since it uses as much as digits as its factorization.

450257077468789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6638284800, while the sum is 79.

The spelling of 450257077468789 in words is "four hundred fifty trillion, two hundred fifty-seven billion, seventy-seven million, four hundred sixty-eight thousand, seven hundred eighty-nine".