28317718673 has 2 divisors, whose sum is σ = 28317718674. Its totient is φ = 28317718672.

The previous prime is 28317718661. The next prime is 28317718697. The reversal of 28317718673 is 37681771382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23416038529 + 4901680144 = 153023^2 + 70012^2 .

It is a cyclic number.

It is not a de Polignac number, because 28317718673 - 2¹⁶ = 28317653137 is a prime.

It is not a weakly prime, because it can be changed into another prime (28317718573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14158859336 + 14158859337.

It is an arithmetic number, because the mean of its divisors is an integer number (14158859337).

Almost surely, 2^28317718673 is an apocalyptic number.

It is an amenable number.

28317718673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28317718673 is an equidigital number, since it uses as much as digits as its factorization.

28317718673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 53.

The spelling of 28317718673 in words is "twenty-eight billion, three hundred seventeen million, seven hundred eighteen thousand, six hundred seventy-three".