28538022529 has 2 divisors, whose sum is σ = 28538022530. Its totient is φ = 28538022528.

The previous prime is 28538022521. The next prime is 28538022581. The reversal of 28538022529 is 92522083582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23372294400 + 5165728129 = 152880^2 + 71873^2 .

It is a cyclic number.

It is not a de Polignac number, because 28538022529 - 2³ = 28538022521 is a prime.

It is not a weakly prime, because it can be changed into another prime (28538022521) 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, 14269011264 + 14269011265.

It is an arithmetic number, because the mean of its divisors is an integer number (14269011265).

Almost surely, 2^28538022529 is an apocalyptic number.

It is an amenable number.

28538022529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28538022529 is an equidigital number, since it uses as much as digits as its factorization.

28538022529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 28538022529 in words is "twenty-eight billion, five hundred thirty-eight million, twenty-two thousand, five hundred twenty-nine".