13304644641 has 6 divisors (see below), whose sum is σ = 19217820050. Its totient is φ = 8869763088.

The previous prime is 13304644637. The next prime is 13304644649. The reversal of 13304644641 is 14644640331.

13304644641 is a `hidden beast` number, since 1 + 3 + 3 + 0 + 4 + 6 + 4 + 4 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8273721600 + 5030923041 = 90960^2 + 70929^2 .

It is not a de Polignac number, because 13304644641 - 2² = 13304644637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13304644596 and 13304644605.

It is not an unprimeable number, because it can be changed into a prime (13304644649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 739146916 + ... + 739146933.

Almost surely, 2^13304644641 is an apocalyptic number.

It is an amenable number.

13304644641 is a deficient number, since it is larger than the sum of its proper divisors (5913175409).

13304644641 is a wasteful number, since it uses less digits than its factorization.

13304644641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478293855 (or 1478293852 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 13304644641 in words is "thirteen billion, three hundred four million, six hundred forty-four thousand, six hundred forty-one".