441868382536081 has 2 divisors, whose sum is σ = 441868382536082. Its totient is φ = 441868382536080.

The previous prime is 441868382536079. The next prime is 441868382536177. The reversal of 441868382536081 is 180635283868144.

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., 331996058536081 + 109872324000000 = 18220759^2 + 10482000^2 .

It is a cyclic number.

It is not a de Polignac number, because 441868382536081 - 2¹ = 441868382536079 is a prime.

It is a super-2 number, since 2×441868382536081² (a number of 30 digits) contains 22 as substring.

Together with 441868382536079, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 441868382535998 and 441868382536016.

It is not a weakly prime, because it can be changed into another prime (441868382536001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220934191268040 + 220934191268041.

It is an arithmetic number, because the mean of its divisors is an integer number (220934191268041).

Almost surely, 2^{441868382536081} is an apocalyptic number.

It is an amenable number.

441868382536081 is a deficient number, since it is larger than the sum of its proper divisors (1).

441868382536081 is an equidigital number, since it uses as much as digits as its factorization.

441868382536081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 212336640, while the sum is 67.

The spelling of 441868382536081 in words is "four hundred forty-one trillion, eight hundred sixty-eight billion, three hundred eighty-two million, five hundred thirty-six thousand, eighty-one".