11113112540 has 24 divisors (see below), whose sum is σ = 24565828560. Its totient is φ = 4211284608.

The previous prime is 11113112539. The next prime is 11113112611. The reversal of 11113112540 is 4521131111.

11113112540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14622137 + ... + 14622896.

It is an arithmetic number, because the mean of its divisors is an integer number (1023576190).

Almost surely, 2^11113112540 is an apocalyptic number.

11113112540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11113112540 is an abundant number, since it is smaller than the sum of its proper divisors (13452716020).

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

11113112540 is a wasteful number, since it uses less digits than its factorization.

11113112540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29245061 (or 29245059 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 11113112540 its reverse (4521131111), we get a palindrome (15634243651).

The spelling of 11113112540 in words is "eleven billion, one hundred thirteen million, one hundred twelve thousand, five hundred forty".