28336668193 has 2 divisors, whose sum is σ = 28336668194. Its totient is φ = 28336668192.

The previous prime is 28336668179. The next prime is 28336668221. The reversal of 28336668193 is 39186663382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23208389649 + 5128278544 = 152343^2 + 71612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28336668193 is a prime.

It is not a weakly prime, because it can be changed into another prime (28336668133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14168334096 + 14168334097.

It is an arithmetic number, because the mean of its divisors is an integer number (14168334097).

Almost surely, 2^28336668193 is an apocalyptic number.

It is an amenable number.

28336668193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28336668193 is an equidigital number, since it uses as much as digits as its factorization.

28336668193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 55.

The spelling of 28336668193 in words is "twenty-eight billion, three hundred thirty-six million, six hundred sixty-eight thousand, one hundred ninety-three".