84442137115789 has 2 divisors, whose sum is σ = 84442137115790. Its totient is φ = 84442137115788.

The previous prime is 84442137115753. The next prime is 84442137115811. The reversal of 84442137115789 is 98751173124448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70531997178889 + 13910139936900 = 8398333^2 + 3729630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84442137115789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84442137115789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84442137115709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42221068557894 + 42221068557895.

It is an arithmetic number, because the mean of its divisors is an integer number (42221068557895).

Almost surely, 2^{84442137115789} is an apocalyptic number.

It is an amenable number.

84442137115789 is a deficient number, since it is larger than the sum of its proper divisors (1).

84442137115789 is an equidigital number, since it uses as much as digits as its factorization.

84442137115789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 64.

The spelling of 84442137115789 in words is "eighty-four trillion, four hundred forty-two billion, one hundred thirty-seven million, one hundred fifteen thousand, seven hundred eighty-nine".