28605838229 has 2 divisors, whose sum is σ = 28605838230. Its totient is φ = 28605838228.

The previous prime is 28605838213. The next prime is 28605838237. The reversal of 28605838229 is 92283850682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25321402129 + 3284436100 = 159127^2 + 57310^2 .

It is a cyclic number.

It is not a de Polignac number, because 28605838229 - 2⁴ = 28605838213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605838259) 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, 14302919114 + 14302919115.

It is an arithmetic number, because the mean of its divisors is an integer number (14302919115).

Almost surely, 2^28605838229 is an apocalyptic number.

It is an amenable number.

28605838229 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605838229 is an equidigital number, since it uses as much as digits as its factorization.

28605838229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 28605838229 in words is "twenty-eight billion, six hundred five million, eight hundred thirty-eight thousand, two hundred twenty-nine".