43113440017 has 2 divisors, whose sum is σ = 43113440018. Its totient is φ = 43113440016.

The previous prime is 43113439939. The next prime is 43113440057. The reversal of 43113440017 is 71004431134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37496836881 + 5616603136 = 193641^2 + 74944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43113440017 is a prime.

It is not a weakly prime, because it can be changed into another prime (43113440057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556720008 + 21556720009.

It is an arithmetic number, because the mean of its divisors is an integer number (21556720009).

Almost surely, 2^43113440017 is an apocalyptic number.

It is an amenable number.

43113440017 is a deficient number, since it is larger than the sum of its proper divisors (1).

43113440017 is an equidigital number, since it uses as much as digits as its factorization.

43113440017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 43113440017 in words is "forty-three billion, one hundred thirteen million, four hundred forty thousand, seventeen".