111981714137 has 2 divisors, whose sum is σ = 111981714138. Its totient is φ = 111981714136.

The previous prime is 111981714133. The next prime is 111981714211. The reversal of 111981714137 is 731417189111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93858900496 + 18122813641 = 306364^2 + 134621^2 .

It is a cyclic number.

It is not a de Polignac number, because 111981714137 - 2² = 111981714133 is a prime.

It is not a weakly prime, because it can be changed into another prime (111981714133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55990857068 + 55990857069.

It is an arithmetic number, because the mean of its divisors is an integer number (55990857069).

Almost surely, 2^111981714137 is an apocalyptic number.

It is an amenable number.

111981714137 is a deficient number, since it is larger than the sum of its proper divisors (1).

111981714137 is an equidigital number, since it uses as much as digits as its factorization.

111981714137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 44.

The spelling of 111981714137 in words is "one hundred eleven billion, nine hundred eighty-one million, seven hundred fourteen thousand, one hundred thirty-seven".