40344422213 has 4 divisors (see below), whose sum is σ = 40346447820. Its totient is φ = 40342396608.

The previous prime is 40344422207. The next prime is 40344422227. The reversal of 40344422213 is 31222444304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7197486244 + 33146935969 = 84838^2 + 182063^2 .

It is a cyclic number.

It is not a de Polignac number, because 40344422213 - 2⁴ = 40344422197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344422113) 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 in 3 ways as a sum of consecutive naturals, for example, 982628 + ... + 1022861.

It is an arithmetic number, because the mean of its divisors is an integer number (10086611955).

Almost surely, 2^40344422213 is an apocalyptic number.

It is an amenable number.

40344422213 is a deficient number, since it is larger than the sum of its proper divisors (2025607).

40344422213 is a wasteful number, since it uses less digits than its factorization.

40344422213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025606.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 40344422213 its reverse (31222444304), we get a palindrome (71566866517).

The spelling of 40344422213 in words is "forty billion, three hundred forty-four million, four hundred twenty-two thousand, two hundred thirteen".