28233650849 has 2 divisors, whose sum is σ = 28233650850. Its totient is φ = 28233650848.

The previous prime is 28233650831. The next prime is 28233650857. The reversal of 28233650849 is 94805633282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22400510224 + 5833140625 = 149668^2 + 76375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28233650849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28233650797 and 28233650806.

It is not a weakly prime, because it can be changed into another prime (28233650869) 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, 14116825424 + 14116825425.

It is an arithmetic number, because the mean of its divisors is an integer number (14116825425).

Almost surely, 2^28233650849 is an apocalyptic number.

It is an amenable number.

28233650849 is a deficient number, since it is larger than the sum of its proper divisors (1).

28233650849 is an equidigital number, since it uses as much as digits as its factorization.

28233650849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 28233650849 in words is "twenty-eight billion, two hundred thirty-three million, six hundred fifty thousand, eight hundred forty-nine".