28528546693 has 2 divisors, whose sum is σ = 28528546694. Its totient is φ = 28528546692.

The previous prime is 28528546667. The next prime is 28528546699. The reversal of 28528546693 is 39664582582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27111927649 + 1416619044 = 164657^2 + 37638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28528546693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28528546699) 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, 14264273346 + 14264273347.

It is an arithmetic number, because the mean of its divisors is an integer number (14264273347).

Almost surely, 2^28528546693 is an apocalyptic number.

It is an amenable number.

28528546693 is a deficient number, since it is larger than the sum of its proper divisors (1).

28528546693 is an equidigital number, since it uses as much as digits as its factorization.

28528546693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24883200, while the sum is 58.

The spelling of 28528546693 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred forty-six thousand, six hundred ninety-three".