13344403421205 has 24 divisors (see below), whose sum is σ = 23130384775992. Its totient is φ = 7116988846464.

The previous prime is 13344403421179. The next prime is 13344403421213. The reversal of 13344403421205 is 50212430444331.

13344403421205 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 4 + 403 + 42 + 1 + 205 = 666.

13344403421205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19048968324 + 13325354452881 = 138018^2 + 3650391^2 .

It is not a de Polignac number, because 13344403421205 - 2⁹ = 13344403420693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13344403421205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21539227 + ... + 22150103.

It is an arithmetic number, because the mean of its divisors is an integer number (963766032333).

Almost surely, 2^{13344403421205} is an apocalyptic number.

13344403421205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13344403421205 is a deficient number, since it is larger than the sum of its proper divisors (9785981354787).

13344403421205 is a wasteful number, since it uses less digits than its factorization.

13344403421205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096325 (or 1096322 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 13344403421205 its reverse (50212430444331), we get a palindrome (63556833865536).

The spelling of 13344403421205 in words is "thirteen trillion, three hundred forty-four billion, four hundred three million, four hundred twenty-one thousand, two hundred five".