28110736217 has 2 divisors, whose sum is σ = 28110736218. Its totient is φ = 28110736216.

The previous prime is 28110736169. The next prime is 28110736243. The reversal of 28110736217 is 71263701182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19576487056 + 8534249161 = 139916^2 + 92381^2 .

It is a cyclic number.

It is not a de Polignac number, because 28110736217 - 2¹⁰ = 28110735193 is a prime.

It is not a weakly prime, because it can be changed into another prime (28110736517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14055368108 + 14055368109.

It is an arithmetic number, because the mean of its divisors is an integer number (14055368109).

Almost surely, 2^28110736217 is an apocalyptic number.

It is an amenable number.

28110736217 is a deficient number, since it is larger than the sum of its proper divisors (1).

28110736217 is an equidigital number, since it uses as much as digits as its factorization.

28110736217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 28110736217 in words is "twenty-eight billion, one hundred ten million, seven hundred thirty-six thousand, two hundred seventeen".