111663608941 has 2 divisors, whose sum is σ = 111663608942. Its totient is φ = 111663608940.

The previous prime is 111663608939. The next prime is 111663608971. The reversal of 111663608941 is 149806366111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72803372041 + 38860236900 = 269821^2 + 197130^2 .

It is a cyclic number.

It is not a de Polignac number, because 111663608941 - 2¹ = 111663608939 is a prime.

Together with 111663608939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 111663608891 and 111663608900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111663608971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55831804470 + 55831804471.

It is an arithmetic number, because the mean of its divisors is an integer number (55831804471).

Almost surely, 2^111663608941 is an apocalyptic number.

It is an amenable number.

111663608941 is a deficient number, since it is larger than the sum of its proper divisors (1).

111663608941 is an equidigital number, since it uses as much as digits as its factorization.

111663608941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 111663608941 in words is "one hundred eleven billion, six hundred sixty-three million, six hundred eight thousand, nine hundred forty-one".