13920126305 has 4 divisors (see below), whose sum is σ = 16704151572. Its totient is φ = 11136101040.

The previous prime is 13920126289. The next prime is 13920126343. The reversal of 13920126305 is 50362102931.

13920126305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1854421969 + 12065704336 = 43063^2 + 109844^2 .

It is not a de Polignac number, because 13920126305 - 2⁴ = 13920126289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392012626 + ... + 1392012635.

It is an arithmetic number, because the mean of its divisors is an integer number (4176037893).

Almost surely, 2^13920126305 is an apocalyptic number.

It is an amenable number.

13920126305 is a deficient number, since it is larger than the sum of its proper divisors (2784025267).

13920126305 is an equidigital number, since it uses as much as digits as its factorization.

13920126305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784025266.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 13920126305 in words is "thirteen billion, nine hundred twenty million, one hundred twenty-six thousand, three hundred five".