28779286747 has 2 divisors, whose sum is σ = 28779286748. Its totient is φ = 28779286746.

The previous prime is 28779286741. The next prime is 28779286793. The reversal of 28779286747 is 74768297782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28779286747 - 2²³ = 28770898139 is a prime.

It is not a weakly prime, because it can be changed into another prime (28779286741) 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, 14389643373 + 14389643374.

It is an arithmetic number, because the mean of its divisors is an integer number (14389643374).

Almost surely, 2^28779286747 is an apocalyptic number.

28779286747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28779286747 is an equidigital number, since it uses as much as digits as its factorization.

28779286747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132765696, while the sum is 67.

The spelling of 28779286747 in words is "twenty-eight billion, seven hundred seventy-nine million, two hundred eighty-six thousand, seven hundred forty-seven".