11504457521 has 8 divisors (see below), whose sum is σ = 11554117344. Its totient is φ = 11454877440.

The previous prime is 11504457491. The next prime is 11504457529. The reversal of 11504457521 is 12575440511.

11504457521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11504457521 - 2⁶ = 11504457457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11504457529) by changing a digit.

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, 278801 + ... + 317393.

It is an arithmetic number, because the mean of its divisors is an integer number (1444264668).

Almost surely, 2^11504457521 is an apocalyptic number.

It is an amenable number.

11504457521 is a deficient number, since it is larger than the sum of its proper divisors (49659823).

11504457521 is an equidigital number, since it uses as much as digits as its factorization.

11504457521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39871.

The product of its (nonzero) digits is 28000, while the sum is 35.

The spelling of 11504457521 in words is "eleven billion, five hundred four million, four hundred fifty-seven thousand, five hundred twenty-one".