13665555355 has 4 divisors (see below), whose sum is σ = 16398666432. Its totient is φ = 10932444280.

The previous prime is 13665555341. The next prime is 13665555367. The reversal of 13665555355 is 55355556631.

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

It is not a de Polignac number, because 13665555355 - 2¹⁹ = 13665031067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13665555299 and 13665555308.

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, 1366555531 + ... + 1366555540.

It is an arithmetic number, because the mean of its divisors is an integer number (4099666608).

Almost surely, 2^13665555355 is an apocalyptic number.

13665555355 is a deficient number, since it is larger than the sum of its proper divisors (2733111077).

13665555355 is an equidigital number, since it uses as much as digits as its factorization.

13665555355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733111076.

The product of its digits is 5062500, while the sum is 49.

The spelling of 13665555355 in words is "thirteen billion, six hundred sixty-five million, five hundred fifty-five thousand, three hundred fifty-five".