40043444350423 has 2 divisors, whose sum is σ = 40043444350424. Its totient is φ = 40043444350422.

The previous prime is 40043444350297. The next prime is 40043444350447. The reversal of 40043444350423 is 32405344434004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40043444350423 - 2²⁵ = 40043410795991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40043444300423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021722175211 + 20021722175212.

It is an arithmetic number, because the mean of its divisors is an integer number (20021722175212).

Almost surely, 2^{40043444350423} is an apocalyptic number.

40043444350423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043444350423 is an equidigital number, since it uses as much as digits as its factorization.

40043444350423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 40.

Adding to 40043444350423 its reverse (32405344434004), we get a palindrome (72448788784427).

The spelling of 40043444350423 in words is "forty trillion, forty-three billion, four hundred forty-four million, three hundred fifty thousand, four hundred twenty-three".