74456665447 has 2 divisors, whose sum is σ = 74456665448. Its totient is φ = 74456665446.

The previous prime is 74456665417. The next prime is 74456665457.

It is a happy number.

74456665447 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 74456665447 - 2²³ = 74448276839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74456665391 and 74456665400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74456665417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37228332723 + 37228332724.

It is an arithmetic number, because the mean of its divisors is an integer number (37228332724).

Almost surely, 2^74456665447 is an apocalyptic number.

74456665447 is a deficient number, since it is larger than the sum of its proper divisors (1).

74456665447 is an equidigital number, since it uses as much as digits as its factorization.

74456665447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 58.

The spelling of 74456665447 in words is "seventy-four billion, four hundred fifty-six million, six hundred sixty-five thousand, four hundred forty-seven".