28288277089 has 2 divisors, whose sum is σ = 28288277090. Its totient is φ = 28288277088.

The previous prime is 28288277009. The next prime is 28288277111. The reversal of 28288277089 is 98077288282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28285521489 + 2755600 = 168183^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 28288277089 - 2²⁷ = 28154059361 is a prime.

It is not a weakly prime, because it can be changed into another prime (28288277009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14144138544 + 14144138545.

It is an arithmetic number, because the mean of its divisors is an integer number (14144138545).

Almost surely, 2^28288277089 is an apocalyptic number.

It is an amenable number.

28288277089 is a deficient number, since it is larger than the sum of its proper divisors (1).

28288277089 is an equidigital number, since it uses as much as digits as its factorization.

28288277089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14450688, while the sum is 61.

The spelling of 28288277089 in words is "twenty-eight billion, two hundred eighty-eight million, two hundred seventy-seven thousand, eighty-nine".