111601711687 has 2 divisors, whose sum is σ = 111601711688. Its totient is φ = 111601711686.

The previous prime is 111601711609. The next prime is 111601711691. The reversal of 111601711687 is 786117106111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111601711687 - 2¹⁵ = 111601678919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111601711087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55800855843 + 55800855844.

It is an arithmetic number, because the mean of its divisors is an integer number (55800855844).

Almost surely, 2^111601711687 is an apocalyptic number.

111601711687 is a deficient number, since it is larger than the sum of its proper divisors (1).

111601711687 is an equidigital number, since it uses as much as digits as its factorization.

111601711687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 40.

Adding to 111601711687 its reverse (786117106111), we get a palindrome (897718817798).

The spelling of 111601711687 in words is "one hundred eleven billion, six hundred one million, seven hundred eleven thousand, six hundred eighty-seven".