111147917689 has 2 divisors, whose sum is σ = 111147917690. Its totient is φ = 111147917688.

The previous prime is 111147917677. The next prime is 111147917707. The reversal of 111147917689 is 986719741111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83497881600 + 27650036089 = 288960^2 + 166283^2 .

It is a cyclic number.

It is not a de Polignac number, because 111147917689 - 2¹⁵ = 111147884921 is a prime.

It is not a weakly prime, because it can be changed into another prime (111147915689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55573958844 + 55573958845.

It is an arithmetic number, because the mean of its divisors is an integer number (55573958845).

Almost surely, 2^111147917689 is an apocalyptic number.

It is an amenable number.

111147917689 is a deficient number, since it is larger than the sum of its proper divisors (1).

111147917689 is an equidigital number, since it uses as much as digits as its factorization.

111147917689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 55.

The spelling of 111147917689 in words is "one hundred eleven billion, one hundred forty-seven million, nine hundred seventeen thousand, six hundred eighty-nine".