450665220635197 has 2 divisors, whose sum is σ = 450665220635198. Its totient is φ = 450665220635196.

The previous prime is 450665220635183. The next prime is 450665220635291. The reversal of 450665220635197 is 791536022566054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429407459178201 + 21257761456996 = 20722149^2 + 4610614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450665220635197 is a prime.

It is a super-4 number, since 4×450665220635197⁴ (a number of 60 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450665220635797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225332610317598 + 225332610317599.

It is an arithmetic number, because the mean of its divisors is an integer number (225332610317599).

Almost surely, 2^{450665220635197} is an apocalyptic number.

It is an amenable number.

450665220635197 is a deficient number, since it is larger than the sum of its proper divisors (1).

450665220635197 is an equidigital number, since it uses as much as digits as its factorization.

450665220635197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648000, while the sum is 61.

The spelling of 450665220635197 in words is "four hundred fifty trillion, six hundred sixty-five billion, two hundred twenty million, six hundred thirty-five thousand, one hundred ninety-seven".