13320545423 has 4 divisors (see below), whose sum is σ = 13321404768. Its totient is φ = 13319686080.

The previous prime is 13320545393. The next prime is 13320545471. The reversal of 13320545423 is 32454502331.

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

It is a cyclic number.

It is not a de Polignac number, because 13320545423 - 2¹⁰ = 13320544399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13320545423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320545123) 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, 405986 + ... + 437567.

It is an arithmetic number, because the mean of its divisors is an integer number (3330351192).

Almost surely, 2^13320545423 is an apocalyptic number.

13320545423 is a deficient number, since it is larger than the sum of its proper divisors (859345).

13320545423 is an equidigital number, since it uses as much as digits as its factorization.

13320545423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859344.

The product of its (nonzero) digits is 43200, while the sum is 32.

The spelling of 13320545423 in words is "thirteen billion, three hundred twenty million, five hundred forty-five thousand, four hundred twenty-three".