422646366583897 has 2 divisors, whose sum is σ = 422646366583898. Its totient is φ = 422646366583896.

The previous prime is 422646366583871. The next prime is 422646366583981. The reversal of 422646366583897 is 798385663646224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221218146547216 + 201428220036681 = 14873404^2 + 14192541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422646366583897 is a prime.

It is not a weakly prime, because it can be changed into another prime (422646363583897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211323183291948 + 211323183291949.

It is an arithmetic number, because the mean of its divisors is an integer number (211323183291949).

Almost surely, 2^{422646366583897} is an apocalyptic number.

It is an amenable number.

422646366583897 is a deficient number, since it is larger than the sum of its proper divisors (1).

422646366583897 is an equidigital number, since it uses as much as digits as its factorization.

422646366583897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15049359360, while the sum is 79.

The spelling of 422646366583897 in words is "four hundred twenty-two trillion, six hundred forty-six billion, three hundred sixty-six million, five hundred eighty-three thousand, eight hundred ninety-seven".