28287318601 has 2 divisors, whose sum is σ = 28287318602. Its totient is φ = 28287318600.

The previous prime is 28287318599. The next prime is 28287318643. The reversal of 28287318601 is 10681378282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27717255225 + 570063376 = 166485^2 + 23876^2 .

It is a cyclic number.

It is not a de Polignac number, because 28287318601 - 2¹ = 28287318599 is a prime.

Together with 28287318599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28287318671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143659300 + 14143659301.

It is an arithmetic number, because the mean of its divisors is an integer number (14143659301).

Almost surely, 2^28287318601 is an apocalyptic number.

It is an amenable number.

28287318601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28287318601 is an equidigital number, since it uses as much as digits as its factorization.

28287318601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 28287318601 in words is "twenty-eight billion, two hundred eighty-seven million, three hundred eighteen thousand, six hundred one".