13326400663 has 4 divisors (see below), whose sum is σ = 13400027368. Its totient is φ = 13252773960.

The previous prime is 13326400639. The next prime is 13326400669. The reversal of 13326400663 is 36600462331.

13326400663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36600462331 = 165449 ⋅221219.

It is a cyclic number.

It is not a de Polignac number, because 13326400663 - 2²¹ = 13324303511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13326400669) 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 3 ways as a sum of consecutive naturals, for example, 36813081 + ... + 36813442.

It is an arithmetic number, because the mean of its divisors is an integer number (3350006842).

Almost surely, 2^13326400663 is an apocalyptic number.

13326400663 is a deficient number, since it is larger than the sum of its proper divisors (73626705).

13326400663 is an equidigital number, since it uses as much as digits as its factorization.

13326400663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73626704.

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 13326400663 its reverse (36600462331), we get a palindrome (49926862994).

The spelling of 13326400663 in words is "thirteen billion, three hundred twenty-six million, four hundred thousand, six hundred sixty-three".