13205423051 has 4 divisors (see below), whose sum is σ = 13207990872. Its totient is φ = 13202855232.

The previous prime is 13205423041. The next prime is 13205423053. The reversal of 13205423051 is 15032450231.

It is a happy number.

13205423051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13205423051 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 13205423051.

It is not an unprimeable number, because it can be changed into a prime (13205423053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276181 + ... + 1286486.

It is an arithmetic number, because the mean of its divisors is an integer number (3301997718).

Almost surely, 2^13205423051 is an apocalyptic number.

13205423051 is a deficient number, since it is larger than the sum of its proper divisors (2567821).

13205423051 is an equidigital number, since it uses as much as digits as its factorization.

13205423051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567820.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13205423051 its reverse (15032450231), we get a palindrome (28237873282).

The spelling of 13205423051 in words is "thirteen billion, two hundred five million, four hundred twenty-three thousand, fifty-one".