28147927167851 has 2 divisors, whose sum is σ = 28147927167852. Its totient is φ = 28147927167850.

The previous prime is 28147927167799. The next prime is 28147927167901. The reversal of 28147927167851 is 15876172974182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28147927167851 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28147927167551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14073963583925 + 14073963583926.

It is an arithmetic number, because the mean of its divisors is an integer number (14073963583926).

Almost surely, 2^{28147927167851} is an apocalyptic number.

28147927167851 is a deficient number, since it is larger than the sum of its proper divisors (1).

28147927167851 is an equidigital number, since it uses as much as digits as its factorization.

28147927167851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94832640, while the sum is 68.

The spelling of 28147927167851 in words is "twenty-eight trillion, one hundred forty-seven billion, nine hundred twenty-seven million, one hundred sixty-seven thousand, eight hundred fifty-one".