40043215013 has 2 divisors, whose sum is σ = 40043215014. Its totient is φ = 40043215012.

The previous prime is 40043214997. The next prime is 40043215033. The reversal of 40043215013 is 31051234004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36447773569 + 3595441444 = 190913^2 + 59962^2 .

It is a cyclic number.

It is not a de Polignac number, because 40043215013 - 2⁴ = 40043214997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40043215013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40043215033) 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, 20021607506 + 20021607507.

It is an arithmetic number, because the mean of its divisors is an integer number (20021607507).

Almost surely, 2^40043215013 is an apocalyptic number.

It is an amenable number.

40043215013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043215013 is an equidigital number, since it uses as much as digits as its factorization.

40043215013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 40043215013 its reverse (31051234004), we get a palindrome (71094449017).

The spelling of 40043215013 in words is "forty billion, forty-three million, two hundred fifteen thousand, thirteen".