11540304520 has 64 divisors (see below), whose sum is σ = 26525088000. Its totient is φ = 4517441280.

The previous prime is 11540304509. The next prime is 11540304577. The reversal of 11540304520 is 2540304511.

It is a happy number.

11540304520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 473677 + ... + 497443.

It is an arithmetic number, because the mean of its divisors is an integer number (414454500).

Almost surely, 2^11540304520 is an apocalyptic number.

11540304520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11540304520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13262544000).

11540304520 is an abundant number, since it is smaller than the sum of its proper divisors (14984783480).

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

11540304520 is a wasteful number, since it uses less digits than its factorization.

11540304520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24038 (or 24034 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Subtracting from 11540304520 its reverse (2540304511), we obtain a palindrome (9000000009).

The spelling of 11540304520 in words is "eleven billion, five hundred forty million, three hundred four thousand, five hundred twenty".