111906127951 has 2 divisors, whose sum is σ = 111906127952. Its totient is φ = 111906127950.

The previous prime is 111906127871. The next prime is 111906127969. The reversal of 111906127951 is 159721609111.

It is a strong prime.

It is an emirp because it is prime and its reverse (159721609111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111906127951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111906127898 and 111906127907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111906127051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55953063975 + 55953063976.

It is an arithmetic number, because the mean of its divisors is an integer number (55953063976).

Almost surely, 2^111906127951 is an apocalyptic number.

111906127951 is a deficient number, since it is larger than the sum of its proper divisors (1).

111906127951 is an equidigital number, since it uses as much as digits as its factorization.

111906127951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 43.

The spelling of 111906127951 in words is "one hundred eleven billion, nine hundred six million, one hundred twenty-seven thousand, nine hundred fifty-one".