28343367791 has 2 divisors, whose sum is σ = 28343367792. Its totient is φ = 28343367790.

The previous prime is 28343367749. The next prime is 28343367817. The reversal of 28343367791 is 19776334382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28343367791 - 2¹⁰ = 28343366767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28343361791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171683895 + 14171683896.

It is an arithmetic number, because the mean of its divisors is an integer number (14171683896).

Almost surely, 2^28343367791 is an apocalyptic number.

28343367791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28343367791 is an equidigital number, since it uses as much as digits as its factorization.

28343367791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 53.

The spelling of 28343367791 in words is "twenty-eight billion, three hundred forty-three million, three hundred sixty-seven thousand, seven hundred ninety-one".