11503044120 has 64 divisors (see below), whose sum is σ = 34844209920. Its totient is φ = 3037693824.

The previous prime is 11503044103. The next prime is 11503044121. The reversal of 11503044120 is 2144030511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503044121) 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, 452974 + ... + 477693.

It is an arithmetic number, because the mean of its divisors is an integer number (544440780).

Almost surely, 2^11503044120 is an apocalyptic number.

11503044120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11503044120 is an abundant number, since it is smaller than the sum of its proper divisors (23341165800).

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

11503044120 is a wasteful number, since it uses less digits than its factorization.

11503044120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930784 (or 930780 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 11503044120 its reverse (2144030511), we get a palindrome (13647074631).

The spelling of 11503044120 in words is "eleven billion, five hundred three million, forty-four thousand, one hundred twenty".