111840251249 has 2 divisors, whose sum is σ = 111840251250. Its totient is φ = 111840251248.

The previous prime is 111840251239. The next prime is 111840251269. The reversal of 111840251249 is 942152048111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94284001249 + 17556250000 = 307057^2 + 132500^2 .

It is a cyclic number.

It is not a de Polignac number, because 111840251249 - 2⁸ = 111840250993 is a prime.

It is not a weakly prime, because it can be changed into another prime (111840251239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55920125624 + 55920125625.

It is an arithmetic number, because the mean of its divisors is an integer number (55920125625).

Almost surely, 2^111840251249 is an apocalyptic number.

It is an amenable number.

111840251249 is a deficient number, since it is larger than the sum of its proper divisors (1).

111840251249 is an equidigital number, since it uses as much as digits as its factorization.

111840251249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 111840251249 in words is "one hundred eleven billion, eight hundred forty million, two hundred fifty-one thousand, two hundred forty-nine".