450405223240493 has 2 divisors, whose sum is σ = 450405223240494. Its totient is φ = 450405223240492.

The previous prime is 450405223240451. The next prime is 450405223240501. The reversal of 450405223240493 is 394042322504054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326827027976164 + 123578195264329 = 18078358^2 + 11116573^2 .

It is a cyclic number.

It is not a de Polignac number, because 450405223240493 - 2¹⁴ = 450405223224109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450405223240433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225202611620246 + 225202611620247.

It is an arithmetic number, because the mean of its divisors is an integer number (225202611620247).

Almost surely, 2^{450405223240493} is an apocalyptic number.

It is an amenable number.

450405223240493 is a deficient number, since it is larger than the sum of its proper divisors (1).

450405223240493 is an equidigital number, since it uses as much as digits as its factorization.

450405223240493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 450405223240493 in words is "four hundred fifty trillion, four hundred five billion, two hundred twenty-three million, two hundred forty thousand, four hundred ninety-three".