111716844517 has 2 divisors, whose sum is σ = 111716844518. Its totient is φ = 111716844516.

The previous prime is 111716844389. The next prime is 111716844521. The reversal of 111716844517 is 715448617111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58524802561 + 53192041956 = 241919^2 + 230634^2 .

It is a cyclic number.

It is not a de Polignac number, because 111716844517 - 2⁷ = 111716844389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111716874517) 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, 55858422258 + 55858422259.

It is an arithmetic number, because the mean of its divisors is an integer number (55858422259).

Almost surely, 2^111716844517 is an apocalyptic number.

It is an amenable number.

111716844517 is a deficient number, since it is larger than the sum of its proper divisors (1).

111716844517 is an equidigital number, since it uses as much as digits as its factorization.

111716844517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 46.

The spelling of 111716844517 in words is "one hundred eleven billion, seven hundred sixteen million, eight hundred forty-four thousand, five hundred seventeen".