16868567025851 has 2 divisors, whose sum is σ = 16868567025852. Its totient is φ = 16868567025850.

The previous prime is 16868567025839. The next prime is 16868567025853. The reversal of 16868567025851 is 15852076586861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16868567025851 - 2⁶ = 16868567025787 is a prime.

Together with 16868567025853, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16868567025853) 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, 8434283512925 + 8434283512926.

It is an arithmetic number, because the mean of its divisors is an integer number (8434283512926).

Almost surely, 2^{16868567025851} is an apocalyptic number.

16868567025851 is a deficient number, since it is larger than the sum of its proper divisors (1).

16868567025851 is an equidigital number, since it uses as much as digits as its factorization.

16868567025851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536000, while the sum is 68.

The spelling of 16868567025851 in words is "sixteen trillion, eight hundred sixty-eight billion, five hundred sixty-seven million, twenty-five thousand, eight hundred fifty-one".