28568716069 has 2 divisors, whose sum is σ = 28568716070. Its totient is φ = 28568716068.

The previous prime is 28568716037. The next prime is 28568716079. The reversal of 28568716069 is 96061786582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23519903044 + 5048813025 = 153362^2 + 71055^2 .

It is a cyclic number.

It is not a de Polignac number, because 28568716069 - 2⁵ = 28568716037 is a prime.

It is a super-2 number, since 2×28568716069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28568716079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14284358034 + 14284358035.

It is an arithmetic number, because the mean of its divisors is an integer number (14284358035).

Almost surely, 2^28568716069 is an apocalyptic number.

It is an amenable number.

28568716069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28568716069 is an equidigital number, since it uses as much as digits as its factorization.

28568716069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 28568716069 in words is "twenty-eight billion, five hundred sixty-eight million, seven hundred sixteen thousand, sixty-nine".