28605833237 has 2 divisors, whose sum is σ = 28605833238. Its totient is φ = 28605833236.

The previous prime is 28605833161. The next prime is 28605833251. The reversal of 28605833237 is 73233850682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28596839236 + 8994001 = 169106^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 28605833237 - 2¹² = 28605829141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28605833191 and 28605833200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605838237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302916618 + 14302916619.

It is an arithmetic number, because the mean of its divisors is an integer number (14302916619).

Almost surely, 2^28605833237 is an apocalyptic number.

It is an amenable number.

28605833237 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605833237 is an equidigital number, since it uses as much as digits as its factorization.

28605833237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 28605833237 in words is "twenty-eight billion, six hundred five million, eight hundred thirty-three thousand, two hundred thirty-seven".