40402644041 has 2 divisors, whose sum is σ = 40402644042. Its totient is φ = 40402644040.

The previous prime is 40402644017. The next prime is 40402644053. The reversal of 40402644041 is 14044620404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39057221641 + 1345422400 = 197629^2 + 36680^2 .

It is a cyclic number.

It is not a de Polignac number, because 40402644041 - 2⁶ = 40402643977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40402643995 and 40402644013.

It is not a weakly prime, because it can be changed into another prime (40402644001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201322020 + 20201322021.

It is an arithmetic number, because the mean of its divisors is an integer number (20201322021).

Almost surely, 2^40402644041 is an apocalyptic number.

It is an amenable number.

40402644041 is a deficient number, since it is larger than the sum of its proper divisors (1).

40402644041 is an equidigital number, since it uses as much as digits as its factorization.

40402644041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

The spelling of 40402644041 in words is "forty billion, four hundred two million, six hundred forty-four thousand, forty-one".