28545072529 has 2 divisors, whose sum is σ = 28545072530. Its totient is φ = 28545072528.

The previous prime is 28545072511. The next prime is 28545072533. The reversal of 28545072529 is 92527054582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18293915025 + 10251157504 = 135255^2 + 101248^2 .

It is a cyclic number.

It is not a de Polignac number, because 28545072529 - 2¹⁷ = 28544941457 is a prime.

It is not a weakly prime, because it can be changed into another prime (28545172529) 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, 14272536264 + 14272536265.

It is an arithmetic number, because the mean of its divisors is an integer number (14272536265).

Almost surely, 2^28545072529 is an apocalyptic number.

It is an amenable number.

28545072529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28545072529 is an equidigital number, since it uses as much as digits as its factorization.

28545072529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 28545072529 in words is "twenty-eight billion, five hundred forty-five million, seventy-two thousand, five hundred twenty-nine".