28266757427 has 2 divisors, whose sum is σ = 28266757428. Its totient is φ = 28266757426.

The previous prime is 28266757403. The next prime is 28266757433. The reversal of 28266757427 is 72475766282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28266757427 - 2⁸ = 28266757171 is a prime.

It is not a weakly prime, because it can be changed into another prime (28266787427) 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, 14133378713 + 14133378714.

It is an arithmetic number, because the mean of its divisors is an integer number (14133378714).

Almost surely, 2^28266757427 is an apocalyptic number.

28266757427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28266757427 is an equidigital number, since it uses as much as digits as its factorization.

28266757427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15805440, while the sum is 56.

The spelling of 28266757427 in words is "twenty-eight billion, two hundred sixty-six million, seven hundred fifty-seven thousand, four hundred twenty-seven".