11111113888873 has 4 divisors (see below), whose sum is σ = 11494255747140. Its totient is φ = 10727972030608.

The previous prime is 11111113888817. The next prime is 11111113888909. The reversal of 11111113888873 is 37888831111111.

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 3398429571289 + 7712684317584 = 1843483^2 + 2777172^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111113888873 - 2⁹ = 11111113888361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111113888873.

It is not an unprimeable number, because it can be changed into a prime (11111113888073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191570929090 + ... + 191570929147.

It is an arithmetic number, because the mean of its divisors is an integer number (2873563936785).

Almost surely, 2^{11111113888873} is an apocalyptic number.

It is an amenable number.

11111113888873 is a deficient number, since it is larger than the sum of its proper divisors (383141858267).

11111113888873 is an equidigital number, since it uses as much as digits as its factorization.

11111113888873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383141858266.

The product of its digits is 258048, while the sum is 52.

Adding to 11111113888873 its reverse (37888831111111), we get a palindrome (48999944999984).

The spelling of 11111113888873 in words is "eleven trillion, one hundred eleven billion, one hundred thirteen million, eight hundred eighty-eight thousand, eight hundred seventy-three".