450555521726369 has 2 divisors, whose sum is σ = 450555521726370. Its totient is φ = 450555521726368.

The previous prime is 450555521726363. The next prime is 450555521726371. The reversal of 450555521726369 is 963627125555054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439379451504400 + 11176070221969 = 20961380^2 + 3343063^2 .

It is a cyclic number.

It is not a de Polignac number, because 450555521726369 - 2⁴ = 450555521726353 is a prime.

It is a super-2 number, since 2×450555521726369² (a number of 30 digits) contains 22 as substring.

Together with 450555521726371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (450555521726363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225277760863184 + 225277760863185.

It is an arithmetic number, because the mean of its divisors is an integer number (225277760863185).

Almost surely, 2^{450555521726369} is an apocalyptic number.

It is an amenable number.

450555521726369 is a deficient number, since it is larger than the sum of its proper divisors (1).

450555521726369 is an equidigital number, since it uses as much as digits as its factorization.

450555521726369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200000, while the sum is 65.

The spelling of 450555521726369 in words is "four hundred fifty trillion, five hundred fifty-five billion, five hundred twenty-one million, seven hundred twenty-six thousand, three hundred sixty-nine".