13394378005 has 4 divisors (see below), whose sum is σ = 16073253612. Its totient is φ = 10715502400.

The previous prime is 13394377999. The next prime is 13394378017. The reversal of 13394378005 is 50087349331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50087349331 = 53 ⋅945044327.

It can be written as a sum of positive squares in 2 ways, for example, as 1457941489 + 11936436516 = 38183^2 + 109254^2 .

It is not a de Polignac number, because 13394378005 - 2²⁵ = 13360823573 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1339437796 + ... + 1339437805.

It is an arithmetic number, because the mean of its divisors is an integer number (4018313403).

Almost surely, 2^13394378005 is an apocalyptic number.

It is an amenable number.

13394378005 is a deficient number, since it is larger than the sum of its proper divisors (2678875607).

13394378005 is an equidigital number, since it uses as much as digits as its factorization.

13394378005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678875606.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 13394378005 in words is "thirteen billion, three hundred ninety-four million, three hundred seventy-eight thousand, five".