43423318217723 has 2 divisors, whose sum is σ = 43423318217724. Its totient is φ = 43423318217722.

The previous prime is 43423318217711. The next prime is 43423318217737. The reversal of 43423318217723 is 32771281332434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43423318217723 - 2¹⁰ = 43423318216699 is a prime.

It is not a weakly prime, because it can be changed into another prime (43423318214723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711659108861 + 21711659108862.

It is an arithmetic number, because the mean of its divisors is an integer number (21711659108862).

Almost surely, 2^{43423318217723} is an apocalyptic number.

43423318217723 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423318217723 is an equidigital number, since it uses as much as digits as its factorization.

43423318217723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 50.

The spelling of 43423318217723 in words is "forty-three trillion, four hundred twenty-three billion, three hundred eighteen million, two hundred seventeen thousand, seven hundred twenty-three".