109686000161 has 2 divisors, whose sum is σ = 109686000162. Its totient is φ = 109686000160.

The previous prime is 109686000133. The next prime is 109686000187. The reversal of 109686000161 is 161000686901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71022250000 + 38663750161 = 266500^2 + 196631^2 .

It is an emirp because it is prime and its reverse (161000686901) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 191000989601 and 106989000191.

It is a cyclic number.

It is not a de Polignac number, because 109686000161 - 2¹⁸ = 109685738017 is a prime.

It is not a weakly prime, because it can be changed into another prime (109686000661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54843000080 + 54843000081.

It is an arithmetic number, because the mean of its divisors is an integer number (54843000081).

Almost surely, 2^109686000161 is an apocalyptic number.

It is an amenable number.

109686000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

109686000161 is an equidigital number, since it uses as much as digits as its factorization.

109686000161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 109686000161 in words is "one hundred nine billion, six hundred eighty-six million, one hundred sixty-one", and thus it is an aban number.