1066444326197 has 2 divisors, whose sum is σ = 1066444326198. Its totient is φ = 1066444326196.

The previous prime is 1066444326113. The next prime is 1066444326229. The reversal of 1066444326197 is 7916234446601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1053837752356 + 12606573841 = 1026566^2 + 112279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066444326197 - 2¹² = 1066444322101 is a prime.

It is a super-2 number, since 2×1066444326197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066444326107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533222163098 + 533222163099.

It is an arithmetic number, because the mean of its divisors is an integer number (533222163099).

Almost surely, 2^{1066444326197} is an apocalyptic number.

It is an amenable number.

1066444326197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066444326197 is an equidigital number, since it uses as much as digits as its factorization.

1066444326197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 1066444326197 in words is "one trillion, sixty-six billion, four hundred forty-four million, three hundred twenty-six thousand, one hundred ninety-seven".