13666927553 has 4 divisors (see below), whose sum is σ = 13694762928. Its totient is φ = 13639092180.

The previous prime is 13666927541. The next prime is 13666927559. The reversal of 13666927553 is 35572966631.

13666927553 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35572966631 = 5039 ⋅7059529.

It is a cyclic number.

It is not a de Polignac number, because 13666927553 - 2⁴ = 13666927537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13666927495 and 13666927504.

It is not an unprimeable number, because it can be changed into a prime (13666927559) 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, 13916951 + ... + 13917932.

It is an arithmetic number, because the mean of its divisors is an integer number (3423690732).

Almost surely, 2^13666927553 is an apocalyptic number.

It is an amenable number.

13666927553 is a deficient number, since it is larger than the sum of its proper divisors (27835375).

13666927553 is an equidigital number, since it uses as much as digits as its factorization.

13666927553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27835374.

The product of its digits is 6123600, while the sum is 53.

The spelling of 13666927553 in words is "thirteen billion, six hundred sixty-six million, nine hundred twenty-seven thousand, five hundred fifty-three".