161848855416349 has 2 divisors, whose sum is σ = 161848855416350. Its totient is φ = 161848855416348.

The previous prime is 161848855416337. The next prime is 161848855416401. The reversal of 161848855416349 is 943614558848161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141907227400324 + 19941628016025 = 11912482^2 + 4465605^2 .

It is an emirp because it is prime and its reverse (943614558848161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161848855416349 - 2¹³ = 161848855408157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161848855416319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80924427708174 + 80924427708175.

It is an arithmetic number, because the mean of its divisors is an integer number (80924427708175).

Almost surely, 2^{161848855416349} is an apocalyptic number.

It is an amenable number.

161848855416349 is a deficient number, since it is larger than the sum of its proper divisors (1).

161848855416349 is an equidigital number, since it uses as much as digits as its factorization.

161848855416349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 796262400, while the sum is 73.

The spelling of 161848855416349 in words is "one hundred sixty-one trillion, eight hundred forty-eight billion, eight hundred fifty-five million, four hundred sixteen thousand, three hundred forty-nine".