28317148697 has 2 divisors, whose sum is σ = 28317148698. Its totient is φ = 28317148696.

The previous prime is 28317148667. The next prime is 28317148711. The reversal of 28317148697 is 79684171382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26175680521 + 2141468176 = 161789^2 + 46276^2 .

It is a cyclic number.

It is not a de Polignac number, because 28317148697 - 2¹⁴ = 28317132313 is a prime.

It is not a weakly prime, because it can be changed into another prime (28317148627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14158574348 + 14158574349.

It is an arithmetic number, because the mean of its divisors is an integer number (14158574349).

Almost surely, 2^28317148697 is an apocalyptic number.

It is an amenable number.

28317148697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28317148697 is an equidigital number, since it uses as much as digits as its factorization.

28317148697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 56.

The spelling of 28317148697 in words is "twenty-eight billion, three hundred seventeen million, one hundred forty-eight thousand, six hundred ninety-seven".