40444223421523 has 2 divisors, whose sum is σ = 40444223421524. Its totient is φ = 40444223421522.

The previous prime is 40444223421499. The next prime is 40444223421527. The reversal of 40444223421523 is 32512432244404.

40444223421523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40444223421523 - 2⁴¹ = 38245200165971 is a prime.

It is not a weakly prime, because it can be changed into another prime (40444223421527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222111710761 + 20222111710762.

It is an arithmetic number, because the mean of its divisors is an integer number (20222111710762).

Almost surely, 2^{40444223421523} is an apocalyptic number.

40444223421523 is a deficient number, since it is larger than the sum of its proper divisors (1).

40444223421523 is an equidigital number, since it uses as much as digits as its factorization.

40444223421523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 737280, while the sum is 40.

Adding to 40444223421523 its reverse (32512432244404), we get a palindrome (72956655665927).

The spelling of 40444223421523 in words is "forty trillion, four hundred forty-four billion, two hundred twenty-three million, four hundred twenty-one thousand, five hundred twenty-three".