40243244423 has 2 divisors, whose sum is σ = 40243244424. Its totient is φ = 40243244422.

The previous prime is 40243244387. The next prime is 40243244429. The reversal of 40243244423 is 32444234204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40243244423 - 2¹⁸ = 40242982279 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40243244423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40243244429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121622211 + 20121622212.

It is an arithmetic number, because the mean of its divisors is an integer number (20121622212).

Almost surely, 2^40243244423 is an apocalyptic number.

40243244423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243244423 is an equidigital number, since it uses as much as digits as its factorization.

40243244423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 40243244423 its reverse (32444234204), we get a palindrome (72687478627).

The spelling of 40243244423 in words is "forty billion, two hundred forty-three million, two hundred forty-four thousand, four hundred twenty-three".