13663135555 has 4 divisors (see below), whose sum is σ = 16395762672. Its totient is φ = 10930508440.

The previous prime is 13663135529. The next prime is 13663135601. The reversal of 13663135555 is 55553136631.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13663135555 - 2⁹ = 13663135043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366313551 + ... + 1366313560.

It is an arithmetic number, because the mean of its divisors is an integer number (4098940668).

Almost surely, 2^13663135555 is an apocalyptic number.

13663135555 is a deficient number, since it is larger than the sum of its proper divisors (2732627117).

13663135555 is an equidigital number, since it uses as much as digits as its factorization.

13663135555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732627116.

The product of its digits is 607500, while the sum is 43.

The spelling of 13663135555 in words is "thirteen billion, six hundred sixty-three million, one hundred thirty-five thousand, five hundred fifty-five".