28320774143 has 2 divisors, whose sum is σ = 28320774144. Its totient is φ = 28320774142.

The previous prime is 28320774133. The next prime is 28320774217. The reversal of 28320774143 is 34147702382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28320774143 - 2²⁸ = 28052338687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28320774143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28320774103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14160387071 + 14160387072.

It is an arithmetic number, because the mean of its divisors is an integer number (14160387072).

Almost surely, 2^28320774143 is an apocalyptic number.

28320774143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28320774143 is an equidigital number, since it uses as much as digits as its factorization.

28320774143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 28320774143 in words is "twenty-eight billion, three hundred twenty million, seven hundred seventy-four thousand, one hundred forty-three".