43443476689 has 2 divisors, whose sum is σ = 43443476690. Its totient is φ = 43443476688.

The previous prime is 43443476617. The next prime is 43443476701. The reversal of 43443476689 is 98667434434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38626006225 + 4817470464 = 196535^2 + 69408^2 .

It is a cyclic number.

It is not a de Polignac number, because 43443476689 - 2²⁷ = 43309258961 is a prime.

It is not a weakly prime, because it can be changed into another prime (43443476189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721738344 + 21721738345.

It is an arithmetic number, because the mean of its divisors is an integer number (21721738345).

Almost surely, 2^43443476689 is an apocalyptic number.

It is an amenable number.

43443476689 is a deficient number, since it is larger than the sum of its proper divisors (1).

43443476689 is an equidigital number, since it uses as much as digits as its factorization.

43443476689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 58.

The spelling of 43443476689 in words is "forty-three billion, four hundred forty-three million, four hundred seventy-six thousand, six hundred eighty-nine".