111906127969 has 2 divisors, whose sum is σ = 111906127970. Its totient is φ = 111906127968.

The previous prime is 111906127951. The next prime is 111906128023. The reversal of 111906127969 is 969721609111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86851037025 + 25055090944 = 294705^2 + 158288^2 .

It is an emirp because it is prime and its reverse (969721609111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111906127969 - 2⁷ = 111906127841 is a prime.

It is a super-2 number, since 2×111906127969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111906122969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55953063984 + 55953063985.

It is an arithmetic number, because the mean of its divisors is an integer number (55953063985).

Almost surely, 2^111906127969 is an apocalyptic number.

It is an amenable number.

111906127969 is a deficient number, since it is larger than the sum of its proper divisors (1).

111906127969 is an equidigital number, since it uses as much as digits as its factorization.

111906127969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 111906127969 in words is "one hundred eleven billion, nine hundred six million, one hundred twenty-seven thousand, nine hundred sixty-nine".