161754408847 has 2 divisors, whose sum is σ = 161754408848. Its totient is φ = 161754408846.

The previous prime is 161754408839. The next prime is 161754408857. The reversal of 161754408847 is 748804457161.

161754408847 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 is an emirp because it is prime and its reverse (748804457161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161754408847 - 2³ = 161754408839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161754408857) 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, 80877204423 + 80877204424.

It is an arithmetic number, because the mean of its divisors is an integer number (80877204424).

Almost surely, 2^161754408847 is an apocalyptic number.

161754408847 is a deficient number, since it is larger than the sum of its proper divisors (1).

161754408847 is an equidigital number, since it uses as much as digits as its factorization.

161754408847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 161754408847 in words is "one hundred sixty-one billion, seven hundred fifty-four million, four hundred eight thousand, eight hundred forty-seven".