11115230040 has 48 divisors (see below), whose sum is σ = 36124498800. Its totient is φ = 2964061248.

The previous prime is 11115229933. The next prime is 11115230041. The reversal of 11115230040 is 4003251111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11115229995 and 11115230022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115230041) 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, 15437460 + ... + 15438179.

It is an arithmetic number, because the mean of its divisors is an integer number (752593725).

Almost surely, 2^11115230040 is an apocalyptic number.

11115230040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11115230040 is an abundant number, since it is smaller than the sum of its proper divisors (25009268760).

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

11115230040 is a wasteful number, since it uses less digits than its factorization.

11115230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30875656 (or 30875649 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 11115230040 its reverse (4003251111), we get a palindrome (15118481151).

The spelling of 11115230040 in words is "eleven billion, one hundred fifteen million, two hundred thirty thousand, forty".