8159244079891 has 2 divisors, whose sum is σ = 8159244079892. Its totient is φ = 8159244079890.

The previous prime is 8159244079867. The next prime is 8159244079897. The reversal of 8159244079891 is 1989704429518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8159244079891 - 2⁹ = 8159244079379 is a prime.

It is not a weakly prime, because it can be changed into another prime (8159244079897) 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, 4079622039945 + 4079622039946.

It is an arithmetic number, because the mean of its divisors is an integer number (4079622039946).

Almost surely, 2^{8159244079891} is an apocalyptic number.

8159244079891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8159244079891 is an equidigital number, since it uses as much as digits as its factorization.

8159244079891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 8159244079891 in words is "eight trillion, one hundred fifty-nine billion, two hundred forty-four million, seventy-nine thousand, eight hundred ninety-one".