13665389311 has 4 divisors (see below), whose sum is σ = 15617587792. Its totient is φ = 11713190832.

The previous prime is 13665389273. The next prime is 13665389321. The reversal of 13665389311 is 11398356631.

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

It is not a de Polignac number, because 13665389311 - 2¹⁷ = 13665258239 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 (13665389321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976099230 + ... + 976099243.

It is an arithmetic number, because the mean of its divisors is an integer number (3904396948).

Almost surely, 2^13665389311 is an apocalyptic number.

13665389311 is a deficient number, since it is larger than the sum of its proper divisors (1952198481).

13665389311 is an equidigital number, since it uses as much as digits as its factorization.

13665389311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952198480.

The product of its digits is 349920, while the sum is 46.

The spelling of 13665389311 in words is "thirteen billion, six hundred sixty-five million, three hundred eighty-nine thousand, three hundred eleven".