13405104338 has 4 divisors (see below), whose sum is σ = 20107656510. Its totient is φ = 6702552168.

The previous prime is 13405104331. The next prime is 13405104353. The reversal of 13405104338 is 83340150431.

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

It can be written as a sum of positive squares in only one way, i.e., 11045379409 + 2359724929 = 105097^2 + 48577^2 .

It is not an unprimeable number, because it can be changed into a prime (13405104331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3351276083 + ... + 3351276086.

Almost surely, 2^13405104338 is an apocalyptic number.

13405104338 is a deficient number, since it is larger than the sum of its proper divisors (6702552172).

13405104338 is an equidigital number, since it uses as much as digits as its factorization.

13405104338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702552171.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 13405104338 its reverse (83340150431), we get a palindrome (96745254769).

The spelling of 13405104338 in words is "thirteen billion, four hundred five million, one hundred four thousand, three hundred thirty-eight".