40043244113 has 2 divisors, whose sum is σ = 40043244114. Its totient is φ = 40043244112.

The previous prime is 40043244083. The next prime is 40043244121. The reversal of 40043244113 is 31144234004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34915538449 + 5127705664 = 186857^2 + 71608^2 .

It is a cyclic number.

It is not a de Polignac number, because 40043244113 - 2⁸ = 40043243857 is a prime.

It is a super-2 number, since 2×40043244113² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40043274113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021622056 + 20021622057.

It is an arithmetic number, because the mean of its divisors is an integer number (20021622057).

Almost surely, 2^40043244113 is an apocalyptic number.

It is an amenable number.

40043244113 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043244113 is an equidigital number, since it uses as much as digits as its factorization.

40043244113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 40043244113 its reverse (31144234004), we get a palindrome (71187478117).

The spelling of 40043244113 in words is "forty billion, forty-three million, two hundred forty-four thousand, one hundred thirteen".