11404604521 has 8 divisors (see below), whose sum is σ = 11430534024. Its totient is φ = 11378695680.

The previous prime is 11404604509. The next prime is 11404604647. The reversal of 11404604521 is 12540640411.

11404604521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6171673600 + 5232930921 = 78560^2 + 72339^2 .

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 11404604521 - 2⁵ = 11404604489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11404604521.

It is not an unprimeable number, because it can be changed into a prime (11404604021) 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, 1690471 + ... + 1697203.

It is an arithmetic number, because the mean of its divisors is an integer number (1428816753).

Almost surely, 2^11404604521 is an apocalyptic number.

It is an amenable number.

11404604521 is a deficient number, since it is larger than the sum of its proper divisors (25929503).

11404604521 is an equidigital number, since it uses as much as digits as its factorization.

11404604521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331.

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 11404604521 in words is "eleven billion, four hundred four million, six hundred four thousand, five hundred twenty-one".