110985881161 has 2 divisors, whose sum is σ = 110985881162. Its totient is φ = 110985881160.

The previous prime is 110985881159. The next prime is 110985881213. The reversal of 110985881161 is 161188589011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74526270025 + 36459611136 = 272995^2 + 190944^2 .

It is an emirp because it is prime and its reverse (161188589011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110985881161 - 2¹ = 110985881159 is a prime.

It is a super-2 number, since 2×110985881161² (a number of 23 digits) contains 22 as substring.

Together with 110985881159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (110985881261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55492940580 + 55492940581.

It is an arithmetic number, because the mean of its divisors is an integer number (55492940581).

Almost surely, 2^110985881161 is an apocalyptic number.

It is an amenable number.

110985881161 is a deficient number, since it is larger than the sum of its proper divisors (1).

110985881161 is an equidigital number, since it uses as much as digits as its factorization.

110985881161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 49.

The spelling of 110985881161 in words is "one hundred ten billion, nine hundred eighty-five million, eight hundred eighty-one thousand, one hundred sixty-one".