40243012443 has 12 divisors (see below), whose sum is σ = 58132547928. Its totient is φ = 26826943200.

The previous prime is 40243012423. The next prime is 40243012451. The reversal of 40243012443 is 34421034204.

It is a happy number.

It is not a de Polignac number, because 40243012443 - 2⁹ = 40243011931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40243012423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11743 + ... + 283943.

It is an arithmetic number, because the mean of its divisors is an integer number (4844378994).

Almost surely, 2^40243012443 is an apocalyptic number.

40243012443 is a deficient number, since it is larger than the sum of its proper divisors (17889535485).

40243012443 is a wasteful number, since it uses less digits than its factorization.

40243012443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288634 (or 288631 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40243012443 its reverse (34421034204), we get a palindrome (74664046647).

The spelling of 40243012443 in words is "forty billion, two hundred forty-three million, twelve thousand, four hundred forty-three".