28125628793 has 2 divisors, whose sum is σ = 28125628794. Its totient is φ = 28125628792.

The previous prime is 28125628781. The next prime is 28125628799. The reversal of 28125628793 is 39782652182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17452259449 + 10673369344 = 132107^2 + 103312^2 .

It is a cyclic number.

It is not a de Polignac number, because 28125628793 - 2¹² = 28125624697 is a prime.

It is not a weakly prime, because it can be changed into another prime (28125628799) 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, 14062814396 + 14062814397.

It is an arithmetic number, because the mean of its divisors is an integer number (14062814397).

Almost surely, 2^28125628793 is an apocalyptic number.

It is an amenable number.

28125628793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28125628793 is an equidigital number, since it uses as much as digits as its factorization.

28125628793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The spelling of 28125628793 in words is "twenty-eight billion, one hundred twenty-five million, six hundred twenty-eight thousand, seven hundred ninety-three".