450411616243621 has 2 divisors, whose sum is σ = 450411616243622. Its totient is φ = 450411616243620.

The previous prime is 450411616243543. The next prime is 450411616243627. The reversal of 450411616243621 is 126342616114054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303339871389025 + 147071744854596 = 17416655^2 + 12127314^2 .

It is a cyclic number.

It is not a de Polignac number, because 450411616243621 - 2³¹ = 450409468759973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450411616243627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225205808121810 + 225205808121811.

It is an arithmetic number, because the mean of its divisors is an integer number (225205808121811).

Almost surely, 2^{450411616243621} is an apocalyptic number.

It is an amenable number.

450411616243621 is a deficient number, since it is larger than the sum of its proper divisors (1).

450411616243621 is an equidigital number, since it uses as much as digits as its factorization.

450411616243621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 450411616243621 in words is "four hundred fifty trillion, four hundred eleven billion, six hundred sixteen million, two hundred forty-three thousand, six hundred twenty-one".