28168858087 has 2 divisors, whose sum is σ = 28168858088. Its totient is φ = 28168858086.

The previous prime is 28168858043. The next prime is 28168858181. The reversal of 28168858087 is 78085886182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28168858087 - 2¹⁵ = 28168825319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28168858007) 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, 14084429043 + 14084429044.

It is an arithmetic number, because the mean of its divisors is an integer number (14084429044).

Almost surely, 2^28168858087 is an apocalyptic number.

28168858087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28168858087 is an equidigital number, since it uses as much as digits as its factorization.

28168858087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13762560, while the sum is 61.

The spelling of 28168858087 in words is "twenty-eight billion, one hundred sixty-eight million, eight hundred fifty-eight thousand, eighty-seven".