442610444166281 has 2 divisors, whose sum is σ = 442610444166282. Its totient is φ = 442610444166280.

The previous prime is 442610444166269. The next prime is 442610444166379. The reversal of 442610444166281 is 182661444016244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432418924249225 + 10191519917056 = 20794685^2 + 3192416^2 .

It is a cyclic number.

It is not a de Polignac number, because 442610444166281 - 2³⁸ = 442335566259337 is a prime.

It is a super-2 number, since 2×442610444166281² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442610444166211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221305222083140 + 221305222083141.

It is an arithmetic number, because the mean of its divisors is an integer number (221305222083141).

Almost surely, 2^{442610444166281} is an apocalyptic number.

It is an amenable number.

442610444166281 is a deficient number, since it is larger than the sum of its proper divisors (1).

442610444166281 is an equidigital number, since it uses as much as digits as its factorization.

442610444166281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7077888, while the sum is 53.

The spelling of 442610444166281 in words is "four hundred forty-two trillion, six hundred ten billion, four hundred forty-four million, one hundred sixty-six thousand, two hundred eighty-one".