442916812817 has 2 divisors, whose sum is σ = 442916812818. Its totient is φ = 442916812816.

The previous prime is 442916812787. The next prime is 442916812823. The reversal of 442916812817 is 718218619244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404170433536 + 38746379281 = 635744^2 + 196841^2 .

It is a cyclic number.

It is not a de Polignac number, because 442916812817 - 2²⁰ = 442915764241 is a prime.

It is not a weakly prime, because it can be changed into another prime (442916812717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221458406408 + 221458406409.

It is an arithmetic number, because the mean of its divisors is an integer number (221458406409).

Almost surely, 2^442916812817 is an apocalyptic number.

It is an amenable number.

442916812817 is a deficient number, since it is larger than the sum of its proper divisors (1).

442916812817 is an equidigital number, since it uses as much as digits as its factorization.

442916812817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 53.

The spelling of 442916812817 in words is "four hundred forty-two billion, nine hundred sixteen million, eight hundred twelve thousand, eight hundred seventeen".