11111108888888 has 64 divisors (see below), whose sum is σ = 21393492664320. Its totient is φ = 5407491139200.

The previous prime is 11111108888861. The next prime is 11111108888921. The reversal of 11111108888888 is 88888880111111.

It is a Cunningham number, because it is equal to 3333333²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 11111108888888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313315478 + ... + 313350938.

It is an arithmetic number, because the mean of its divisors is an integer number (334273322880).

Almost surely, 2^{11111108888888} is an apocalyptic number.

It is an amenable number.

11111108888888 is a deficient number, since it is larger than the sum of its proper divisors (10282383775432).

11111108888888 is a wasteful number, since it uses less digits than its factorization.

11111108888888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40068 (or 40064 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 62.

Adding to 11111108888888 its reverse (88888880111111), we get a palindrome (99999988999999).

The spelling of 11111108888888 in words is "eleven trillion, one hundred eleven billion, one hundred eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".