28666766683 has 2 divisors, whose sum is σ = 28666766684. Its totient is φ = 28666766682.

The previous prime is 28666766621. The next prime is 28666766731. The reversal of 28666766683 is 38666766682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28666766683 - 2²⁹ = 28129895771 is a prime.

It is not a weakly prime, because it can be changed into another prime (28666766483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14333383341 + 14333383342.

It is an arithmetic number, because the mean of its divisors is an integer number (14333383342).

Almost surely, 2^28666766683 is an apocalyptic number.

28666766683 is a deficient number, since it is larger than the sum of its proper divisors (1).

28666766683 is an equidigital number, since it uses as much as digits as its factorization.

28666766683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125411328, while the sum is 64.

Subtracting 28666766683 from its reverse (38666766682), we obtain a palindrome (9999999999).

The spelling of 28666766683 in words is "twenty-eight billion, six hundred sixty-six million, seven hundred sixty-six thousand, six hundred eighty-three".