13956832891 has 2 divisors, whose sum is σ = 13956832892. Its totient is φ = 13956832890.

The previous prime is 13956832889. The next prime is 13956832921. The reversal of 13956832891 is 19823865931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13956832891 - 2¹ = 13956832889 is a prime.

Together with 13956832889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13956832811) 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 as a sum of consecutive naturals, namely, 6978416445 + 6978416446.

It is an arithmetic number, because the mean of its divisors is an integer number (6978416446).

Almost surely, 2^13956832891 is an apocalyptic number.

13956832891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13956832891 is an equidigital number, since it uses as much as digits as its factorization.

13956832891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 55.

The spelling of 13956832891 in words is "thirteen billion, nine hundred fifty-six million, eight hundred thirty-two thousand, eight hundred ninety-one".