28566605201 has 2 divisors, whose sum is σ = 28566605202. Its totient is φ = 28566605200.

The previous prime is 28566605161. The next prime is 28566605219. The reversal of 28566605201 is 10250666582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25352282176 + 3214323025 = 159224^2 + 56695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28566605201 is a prime.

It is not a weakly prime, because it can be changed into another prime (28566605801) 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, 14283302600 + 14283302601.

It is an arithmetic number, because the mean of its divisors is an integer number (14283302601).

Almost surely, 2^28566605201 is an apocalyptic number.

It is an amenable number.

28566605201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28566605201 is an equidigital number, since it uses as much as digits as its factorization.

28566605201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 28566605201 in words is "twenty-eight billion, five hundred sixty-six million, six hundred five thousand, two hundred one".