111041427989 has 2 divisors, whose sum is σ = 111041427990. Its totient is φ = 111041427988.

The previous prime is 111041427949. The next prime is 111041427997. The reversal of 111041427989 is 989724140111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107564320900 + 3477107089 = 327970^2 + 58967^2 .

It is a cyclic number.

It is not a de Polignac number, because 111041427989 - 2⁸ = 111041427733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111041427949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55520713994 + 55520713995.

It is an arithmetic number, because the mean of its divisors is an integer number (55520713995).

Almost surely, 2^111041427989 is an apocalyptic number.

It is an amenable number.

111041427989 is a deficient number, since it is larger than the sum of its proper divisors (1).

111041427989 is an equidigital number, since it uses as much as digits as its factorization.

111041427989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 111041427989 in words is "one hundred eleven billion, forty-one million, four hundred twenty-seven thousand, nine hundred eighty-nine".