74445111089 has 2 divisors, whose sum is σ = 74445111090. Its totient is φ = 74445111088.

The previous prime is 74445110981. The next prime is 74445111137. The reversal of 74445111089 is 98011154447.

Together with previous prime (74445110981) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60704582689 + 13740528400 = 246383^2 + 117220^2 .

It is a cyclic number.

It is not a de Polignac number, because 74445111089 - 2¹² = 74445106993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74445111289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37222555544 + 37222555545.

It is an arithmetic number, because the mean of its divisors is an integer number (37222555545).

Almost surely, 2^74445111089 is an apocalyptic number.

It is an amenable number.

74445111089 is a deficient number, since it is larger than the sum of its proper divisors (1).

74445111089 is an equidigital number, since it uses as much as digits as its factorization.

74445111089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 74445111089 in words is "seventy-four billion, four hundred forty-five million, one hundred eleven thousand, eighty-nine".