161345155429 has 2 divisors, whose sum is σ = 161345155430. Its totient is φ = 161345155428.

The previous prime is 161345155417. The next prime is 161345155451. The reversal of 161345155429 is 924551543161.

161345155429 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., 156538922500 + 4806232929 = 395650^2 + 69327^2 .

It is an emirp because it is prime and its reverse (924551543161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161345155429 - 2⁵ = 161345155397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161345155459) 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, 80672577714 + 80672577715.

It is an arithmetic number, because the mean of its divisors is an integer number (80672577715).

Almost surely, 2^161345155429 is an apocalyptic number.

It is an amenable number.

161345155429 is a deficient number, since it is larger than the sum of its proper divisors (1).

161345155429 is an equidigital number, since it uses as much as digits as its factorization.

161345155429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 46.

The spelling of 161345155429 in words is "one hundred sixty-one billion, three hundred forty-five million, one hundred fifty-five thousand, four hundred twenty-nine".