13340421005 has 4 divisors (see below), whose sum is σ = 16008505212. Its totient is φ = 10672336800.

The previous prime is 13340420983. The next prime is 13340421011. The reversal of 13340421005 is 50012404331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50012404331 = 71 ⋅704400061.

It can be written as a sum of positive squares in 2 ways, for example, as 8407606249 + 4932814756 = 91693^2 + 70234^2 .

It is not a de Polignac number, because 13340421005 - 2⁶ = 13340420941 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1334042096 + ... + 1334042105.

It is an arithmetic number, because the mean of its divisors is an integer number (4002126303).

Almost surely, 2^13340421005 is an apocalyptic number.

It is an amenable number.

13340421005 is a deficient number, since it is larger than the sum of its proper divisors (2668084207).

13340421005 is an equidigital number, since it uses as much as digits as its factorization.

13340421005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668084206.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13340421005 its reverse (50012404331), we get a palindrome (63352825336).

The spelling of 13340421005 in words is "thirteen billion, three hundred forty million, four hundred twenty-one thousand, five".