2791362123161 has 2 divisors, whose sum is σ = 2791362123162. Its totient is φ = 2791362123160.

The previous prime is 2791362123157. The next prime is 2791362123181. The reversal of 2791362123161 is 1613212631972.

It is a happy number.

2791362123161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2647763568025 + 143598555136 = 1627195^2 + 378944^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791362123161 - 2² = 2791362123157 is a prime.

It is not a weakly prime, because it can be changed into another prime (2791362123131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395681061580 + 1395681061581.

It is an arithmetic number, because the mean of its divisors is an integer number (1395681061581).

Almost surely, 2^{2791362123161} is an apocalyptic number.

It is an amenable number.

2791362123161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791362123161 is an equidigital number, since it uses as much as digits as its factorization.

2791362123161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The spelling of 2791362123161 in words is "two trillion, seven hundred ninety-one billion, three hundred sixty-two million, one hundred twenty-three thousand, one hundred sixty-one".