421044452204017 has 2 divisors, whose sum is σ = 421044452204018. Its totient is φ = 421044452204016.

The previous prime is 421044452203939. The next prime is 421044452204071. The reversal of 421044452204017 is 710402254440124.

Together with next prime (421044452204071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337357011332961 + 83687440871056 = 18367281^2 + 9148084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421044452204017 is a prime.

It is not a weakly prime, because it can be changed into another prime (421044452204087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210522226102008 + 210522226102009.

It is an arithmetic number, because the mean of its divisors is an integer number (210522226102009).

Almost surely, 2^{421044452204017} is an apocalyptic number.

It is an amenable number.

421044452204017 is a deficient number, since it is larger than the sum of its proper divisors (1).

421044452204017 is an equidigital number, since it uses as much as digits as its factorization.

421044452204017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286720, while the sum is 40.

The spelling of 421044452204017 in words is "four hundred twenty-one trillion, forty-four billion, four hundred fifty-two million, two hundred four thousand, seventeen".