161888887159 has 2 divisors, whose sum is σ = 161888887160. Its totient is φ = 161888887158.

The previous prime is 161888887157. The next prime is 161888887219. The reversal of 161888887159 is 951788888161.

161888887159 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 a cyclic number.

It is not a de Polignac number, because 161888887159 - 2¹ = 161888887157 is a prime.

Together with 161888887157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161888887157) 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, 80944443579 + 80944443580.

It is an arithmetic number, because the mean of its divisors is an integer number (80944443580).

Almost surely, 2^161888887159 is an apocalyptic number.

161888887159 is a deficient number, since it is larger than the sum of its proper divisors (1).

161888887159 is an equidigital number, since it uses as much as digits as its factorization.

161888887159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61931520, while the sum is 70.

The spelling of 161888887159 in words is "one hundred sixty-one billion, eight hundred eighty-eight million, eight hundred eighty-seven thousand, one hundred fifty-nine".