28336656191 has 2 divisors, whose sum is σ = 28336656192. Its totient is φ = 28336656190.

The previous prime is 28336656181. The next prime is 28336656281. The reversal of 28336656191 is 19165663382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28336656191 - 2¹⁰ = 28336655167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28336656181) 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, 14168328095 + 14168328096.

It is an arithmetic number, because the mean of its divisors is an integer number (14168328096).

Almost surely, 2^28336656191 is an apocalyptic number.

28336656191 is a deficient number, since it is larger than the sum of its proper divisors (1).

28336656191 is an equidigital number, since it uses as much as digits as its factorization.

28336656191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The spelling of 28336656191 in words is "twenty-eight billion, three hundred thirty-six million, six hundred fifty-six thousand, one hundred ninety-one".