28151744317 has 2 divisors, whose sum is σ = 28151744318. Its totient is φ = 28151744316.

The previous prime is 28151744281. The next prime is 28151744377. The reversal of 28151744317 is 71344715182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27136302361 + 1015441956 = 164731^2 + 31866^2 .

It is a cyclic number.

It is not a de Polignac number, because 28151744317 - 2⁷ = 28151744189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28151744377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14075872158 + 14075872159.

It is an arithmetic number, because the mean of its divisors is an integer number (14075872159).

Almost surely, 2^28151744317 is an apocalyptic number.

It is an amenable number.

28151744317 is a deficient number, since it is larger than the sum of its proper divisors (1).

28151744317 is an equidigital number, since it uses as much as digits as its factorization.

28151744317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The spelling of 28151744317 in words is "twenty-eight billion, one hundred fifty-one million, seven hundred forty-four thousand, three hundred seventeen".