13851968335871 has 2 divisors, whose sum is σ = 13851968335872. Its totient is φ = 13851968335870.

The previous prime is 13851968335831. The next prime is 13851968335873. The reversal of 13851968335871 is 17853386915831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13851968335871 - 2³⁴ = 13834788466687 is a prime.

It is a Sophie Germain prime.

Together with 13851968335873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13851968335873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6925984167935 + 6925984167936.

It is an arithmetic number, because the mean of its divisors is an integer number (6925984167936).

Almost surely, 2^{13851968335871} is an apocalyptic number.

13851968335871 is a deficient number, since it is larger than the sum of its proper divisors (1).

13851968335871 is an equidigital number, since it uses as much as digits as its factorization.

13851968335871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130636800, while the sum is 68.

The spelling of 13851968335871 in words is "thirteen trillion, eight hundred fifty-one billion, nine hundred sixty-eight million, three hundred thirty-five thousand, eight hundred seventy-one".