11123457888 has 96 divisors (see below), whose sum is σ = 30767264640. Its totient is φ = 3509084160.

The previous prime is 11123457887. The next prime is 11123457929. The reversal of 11123457888 is 88875432111.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×11123457888² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123457883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217303 + ... + 2222313.

It is an arithmetic number, because the mean of its divisors is an integer number (320492340).

Almost surely, 2^11123457888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123457888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15383632320).

11123457888 is an abundant number, since it is smaller than the sum of its proper divisors (19643806752).

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

11123457888 is a wasteful number, since it uses less digits than its factorization.

11123457888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260 (or 6252 counting only the distinct ones).

The product of its digits is 430080, while the sum is 48.

Adding to 11123457888 its reverse (88875432111), we get a palindrome (99998889999).

The spelling of 11123457888 in words is "eleven billion, one hundred twenty-three million, four hundred fifty-seven thousand, eight hundred eighty-eight".