161886186151 has 2 divisors, whose sum is σ = 161886186152. Its totient is φ = 161886186150.

The previous prime is 161886186131. The next prime is 161886186169. The reversal of 161886186151 is 151681688161.

161886186151 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 is a cyclic number.

It is not a de Polignac number, because 161886186151 - 2¹⁵ = 161886153383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161886186131) 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, 80943093075 + 80943093076.

It is an arithmetic number, because the mean of its divisors is an integer number (80943093076).

Almost surely, 2^161886186151 is an apocalyptic number.

161886186151 is a deficient number, since it is larger than the sum of its proper divisors (1).

161886186151 is an equidigital number, since it uses as much as digits as its factorization.

161886186151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 52.

The spelling of 161886186151 in words is "one hundred sixty-one billion, eight hundred eighty-six million, one hundred eighty-six thousand, one hundred fifty-one".