28610765779 has 2 divisors, whose sum is σ = 28610765780. Its totient is φ = 28610765778.

The previous prime is 28610765773. The next prime is 28610765783. The reversal of 28610765779 is 97756701682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28610765779 is a prime.

It is not a weakly prime, because it can be changed into another prime (28610765773) 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, 14305382889 + 14305382890.

It is an arithmetic number, because the mean of its divisors is an integer number (14305382890).

Almost surely, 2^28610765779 is an apocalyptic number.

28610765779 is a deficient number, since it is larger than the sum of its proper divisors (1).

28610765779 is an equidigital number, since it uses as much as digits as its factorization.

28610765779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 28610765779 in words is "twenty-eight billion, six hundred ten million, seven hundred sixty-five thousand, seven hundred seventy-nine".