13340066260405 has 4 divisors (see below), whose sum is σ = 16008079512492. Its totient is φ = 10672053008320.

The previous prime is 13340066260403. The next prime is 13340066260427. The reversal of 13340066260405 is 50406266004331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6270221329681 + 7069844930724 = 2504041^2 + 2658918^2 .

It is not a de Polignac number, because 13340066260405 - 2¹ = 13340066260403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340066260403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334006626036 + ... + 1334006626045.

It is an arithmetic number, because the mean of its divisors is an integer number (4002019878123).

Almost surely, 2^{13340066260405} is an apocalyptic number.

It is an amenable number.

13340066260405 is a deficient number, since it is larger than the sum of its proper divisors (2668013252087).

13340066260405 is an equidigital number, since it uses as much as digits as its factorization.

13340066260405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668013252086.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 13340066260405 in words is "thirteen trillion, three hundred forty billion, sixty-six million, two hundred sixty thousand, four hundred five".