111999999983 has 2 divisors, whose sum is σ = 111999999984. Its totient is φ = 111999999982.

The previous prime is 111999999971. The next prime is 111999999989. The reversal of 111999999983 is 389999999111.

It is a strong prime.

It is an emirp because it is prime and its reverse (389999999111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111999999983 - 2¹⁶ = 111999934447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111999999989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55999999991 + 55999999992.

It is an arithmetic number, because the mean of its divisors is an integer number (55999999992).

Almost surely, 2^111999999983 is an apocalyptic number.

111999999983 is a deficient number, since it is larger than the sum of its proper divisors (1).

111999999983 is an equidigital number, since it uses as much as digits as its factorization.

111999999983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114791256, while the sum is 77.

The spelling of 111999999983 in words is "one hundred eleven billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-three".