161102249149 has 2 divisors, whose sum is σ = 161102249150. Its totient is φ = 161102249148.

The previous prime is 161102249111. The next prime is 161102249171. The reversal of 161102249149 is 941942201161.

161102249149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138227804100 + 22874445049 = 371790^2 + 151243^2 .

It is a cyclic number.

It is not a de Polignac number, because 161102249149 - 2¹¹ = 161102247101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161102949149) 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, 80551124574 + 80551124575.

It is an arithmetic number, because the mean of its divisors is an integer number (80551124575).

Almost surely, 2^161102249149 is an apocalyptic number.

It is an amenable number.

161102249149 is a deficient number, since it is larger than the sum of its proper divisors (1).

161102249149 is an equidigital number, since it uses as much as digits as its factorization.

161102249149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 161102249149 in words is "one hundred sixty-one billion, one hundred two million, two hundred forty-nine thousand, one hundred forty-nine".