111994028873 has 2 divisors, whose sum is σ = 111994028874. Its totient is φ = 111994028872.

The previous prime is 111994028851. The next prime is 111994028897. The reversal of 111994028873 is 378820499111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109277847184 + 2716181689 = 330572^2 + 52117^2 .

It is a cyclic number.

It is not a de Polignac number, because 111994028873 - 2⁸ = 111994028617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111994028813) 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, 55997014436 + 55997014437.

It is an arithmetic number, because the mean of its divisors is an integer number (55997014437).

Almost surely, 2^111994028873 is an apocalyptic number.

It is an amenable number.

111994028873 is a deficient number, since it is larger than the sum of its proper divisors (1).

111994028873 is an equidigital number, since it uses as much as digits as its factorization.

111994028873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 111994028873 in words is "one hundred eleven billion, nine hundred ninety-four million, twenty-eight thousand, eight hundred seventy-three".