111009999949 has 4 divisors (see below), whose sum is σ = 117539999964. Its totient is φ = 104479999936.

The previous prime is 111009999931. The next prime is 111009999959. The reversal of 111009999949 is 949999900111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35610331849 + 75399668100 = 188707^2 + 274590^2 .

It is a cyclic number.

It is not a de Polignac number, because 111009999949 - 2⁵ = 111009999917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111009999929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264999982 + ... + 3265000015.

It is an arithmetic number, because the mean of its divisors is an integer number (29384999991).

Almost surely, 2^111009999949 is an apocalyptic number.

It is an amenable number.

111009999949 is a deficient number, since it is larger than the sum of its proper divisors (6530000015).

111009999949 is an equidigital number, since it uses as much as digits as its factorization.

111009999949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530000014.

The product of its (nonzero) digits is 2125764, while the sum is 61.

The spelling of 111009999949 in words is "one hundred eleven billion, nine million, nine hundred ninety-nine thousand, nine hundred forty-nine".