40609442113 has 2 divisors, whose sum is σ = 40609442114. Its totient is φ = 40609442112.

The previous prime is 40609442051. The next prime is 40609442123. The reversal of 40609442113 is 31124490604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31333248144 + 9276193969 = 177012^2 + 96313^2 .

It is a cyclic number.

It is not a de Polignac number, because 40609442113 - 2⁹ = 40609441601 is a prime.

It is not a weakly prime, because it can be changed into another prime (40609442123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20304721056 + 20304721057.

It is an arithmetic number, because the mean of its divisors is an integer number (20304721057).

Almost surely, 2^40609442113 is an apocalyptic number.

It is an amenable number.

40609442113 is a deficient number, since it is larger than the sum of its proper divisors (1).

40609442113 is an equidigital number, since it uses as much as digits as its factorization.

40609442113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 40609442113 in words is "forty billion, six hundred nine million, four hundred forty-two thousand, one hundred thirteen".