19471704442579 has 2 divisors, whose sum is σ = 19471704442580. Its totient is φ = 19471704442578.

The previous prime is 19471704442559. The next prime is 19471704442601. The reversal of 19471704442579 is 97524440717491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19471704442579 - 2⁹ = 19471704442067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19471704442579.

It is not a weakly prime, because it can be changed into another prime (19471704442549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9735852221289 + 9735852221290.

It is an arithmetic number, because the mean of its divisors is an integer number (9735852221290).

Almost surely, 2^{19471704442579} is an apocalyptic number.

19471704442579 is a deficient number, since it is larger than the sum of its proper divisors (1).

19471704442579 is an equidigital number, since it uses as much as digits as its factorization.

19471704442579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 19471704442579 in words is "nineteen trillion, four hundred seventy-one billion, seven hundred four million, four hundred forty-two thousand, five hundred seventy-nine".