19441928711089 has 2 divisors, whose sum is σ = 19441928711090. Its totient is φ = 19441928711088.

The previous prime is 19441928711063. The next prime is 19441928711147. The reversal of 19441928711089 is 98011782914491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15810102820864 + 3631825890225 = 3976192^2 + 1905735^2 .

It is an emirp because it is prime and its reverse (98011782914491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19441928711089 - 2¹³ = 19441928702897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19441928711089.

It is not a weakly prime, because it can be changed into another prime (19441928711039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9720964355544 + 9720964355545.

It is an arithmetic number, because the mean of its divisors is an integer number (9720964355545).

Almost surely, 2^{19441928711089} is an apocalyptic number.

It is an amenable number.

19441928711089 is a deficient number, since it is larger than the sum of its proper divisors (1).

19441928711089 is an equidigital number, since it uses as much as digits as its factorization.

19441928711089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 64.

The spelling of 19441928711089 in words is "nineteen trillion, four hundred forty-one billion, nine hundred twenty-eight million, seven hundred eleven thousand, eighty-nine".