28203245569 has 2 divisors, whose sum is σ = 28203245570. Its totient is φ = 28203245568.

The previous prime is 28203245509. The next prime is 28203245591. The reversal of 28203245569 is 96554230282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28202835969 + 409600 = 167937^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 28203245569 - 2²³ = 28194856961 is a prime.

It is a super-2 number, since 2×28203245569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28203245509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14101622784 + 14101622785.

It is an arithmetic number, because the mean of its divisors is an integer number (14101622785).

Almost surely, 2^28203245569 is an apocalyptic number.

It is an amenable number.

28203245569 is a deficient number, since it is larger than the sum of its proper divisors (1).

28203245569 is an equidigital number, since it uses as much as digits as its factorization.

28203245569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 28203245569 in words is "twenty-eight billion, two hundred three million, two hundred forty-five thousand, five hundred sixty-nine".