11113556889 has 16 divisors (see below), whose sum is σ = 15088328640. Its totient is φ = 7274230080.

The previous prime is 11113556827. The next prime is 11113556891. The reversal of 11113556889 is 98865531111.

It is a de Polignac number, because none of the positive numbers 2^k-11113556889 is a prime.

It is a super-2 number, since 2×11113556889² (a number of 21 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11113556189) 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 15 ways as a sum of consecutive naturals, for example, 101679 + ... + 180459.

It is an arithmetic number, because the mean of its divisors is an integer number (943020540).

Almost surely, 2^11113556889 is an apocalyptic number.

It is an amenable number.

11113556889 is a deficient number, since it is larger than the sum of its proper divisors (3974771751).

11113556889 is an equidigital number, since it uses as much as digits as its factorization.

11113556889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79640.

The product of its digits is 259200, while the sum is 48.

The spelling of 11113556889 in words is "eleven billion, one hundred thirteen million, five hundred fifty-six thousand, eight hundred eighty-nine".