13424434020405 has 32 divisors (see below), whose sum is σ = 24688614297600. Its totient is φ = 6912811999296.

The previous prime is 13424434020397. The next prime is 13424434020419. The reversal of 13424434020405 is 50402043442431.

13424434020405 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 443 + 4 + 0 + 204 + 0 + 5 = 666.

It is not a de Polignac number, because 13424434020405 - 2³ = 13424434020397 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13424434020405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1714483189 + ... + 1714491018.

It is an arithmetic number, because the mean of its divisors is an integer number (771519196800).

Almost surely, 2^{13424434020405} is an apocalyptic number.

13424434020405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13424434020405 is a deficient number, since it is larger than the sum of its proper divisors (11264180277195).

13424434020405 is a wasteful number, since it uses less digits than its factorization.

13424434020405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428974250 (or 3428974244 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 13424434020405 its reverse (50402043442431), we get a palindrome (63826477462836).

The spelling of 13424434020405 in words is "thirteen trillion, four hundred twenty-four billion, four hundred thirty-four million, twenty thousand, four hundred five".