19444444444459 has 2 divisors, whose sum is σ = 19444444444460. Its totient is φ = 19444444444458.

The previous prime is 19444444444429. The next prime is 19444444444463. The reversal of 19444444444459 is 95444444444491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19444444444459 - 2²⁹ = 19443907573547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19444444444459.

It is not a weakly prime, because it can be changed into another prime (19444444444429) 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, 9722222222229 + 9722222222230.

It is an arithmetic number, because the mean of its divisors is an integer number (9722222222230).

Almost surely, 2^{19444444444459} is an apocalyptic number.

19444444444459 is a deficient number, since it is larger than the sum of its proper divisors (1).

19444444444459 is an equidigital number, since it uses as much as digits as its factorization.

19444444444459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 424673280, while the sum is 64.

The spelling of 19444444444459 in words is "nineteen trillion, four hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred fifty-nine".