16734981161 has 2 divisors, whose sum is σ = 16734981162. Its totient is φ = 16734981160.

The previous prime is 16734981149. The next prime is 16734981181. The reversal of 16734981161 is 16118943761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16056691225 + 678289936 = 126715^2 + 26044^2 .

It is an emirp because it is prime and its reverse (16118943761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16734981161 - 2⁶ = 16734981097 is a prime.

It is not a weakly prime, because it can be changed into another prime (16734981181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8367490580 + 8367490581.

It is an arithmetic number, because the mean of its divisors is an integer number (8367490581).

Almost surely, 2^16734981161 is an apocalyptic number.

It is an amenable number.

16734981161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16734981161 is an equidigital number, since it uses as much as digits as its factorization.

16734981161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The spelling of 16734981161 in words is "sixteen billion, seven hundred thirty-four million, nine hundred eighty-one thousand, one hundred sixty-one".