13553538047 has 4 divisors (see below), whose sum is σ = 15489757776. Its totient is φ = 11617318320.

The previous prime is 13553538041. The next prime is 13553538077. The reversal of 13553538047 is 74083535531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74083535531 = 19 ⋅3899133449.

It is a cyclic number.

It is not a de Polignac number, because 13553538047 - 2⁶ = 13553537983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13553537989 and 13553538007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553538041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968109854 + ... + 968109867.

It is an arithmetic number, because the mean of its divisors is an integer number (3872439444).

Almost surely, 2^13553538047 is an apocalyptic number.

13553538047 is a deficient number, since it is larger than the sum of its proper divisors (1936219729).

13553538047 is an equidigital number, since it uses as much as digits as its factorization.

13553538047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936219728.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 13553538047 in words is "thirteen billion, five hundred fifty-three million, five hundred thirty-eight thousand, forty-seven".