11123345667888 has 60 divisors (see below), whose sum is σ = 31792257495648. Its totient is φ = 3628892910720.

The previous prime is 11123345667887. The next prime is 11123345667937. The reversal of 11123345667888 is 88876654332111.

It is a happy number.

11123345667888 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 33 + 456 + 6 + 78 + 88 = 666.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11123345667887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 821753403 + ... + 821766938.

Almost surely, 2^{11123345667888} is an apocalyptic number.

11123345667888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11123345667888 is an abundant number, since it is smaller than the sum of its proper divisors (20668911827760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123345667888 is a wasteful number, since it uses less digits than its factorization.

11123345667888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643520402 (or 1643520393 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

Adding to 11123345667888 its reverse (88876654332111), we get a palindrome (99999999999999).

The spelling of 11123345667888 in words is "eleven trillion, one hundred twenty-three billion, three hundred forty-five million, six hundred sixty-seven thousand, eight hundred eighty-eight".