28165818337 has 2 divisors, whose sum is σ = 28165818338. Its totient is φ = 28165818336.

The previous prime is 28165818311. The next prime is 28165818379. The reversal of 28165818337 is 73381856182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27798559441 + 367258896 = 166729^2 + 19164^2 .

It is a cyclic number.

It is not a de Polignac number, because 28165818337 - 2¹⁵ = 28165785569 is a prime.

It is not a weakly prime, because it can be changed into another prime (28165818437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14082909168 + 14082909169.

It is an arithmetic number, because the mean of its divisors is an integer number (14082909169).

Almost surely, 2^28165818337 is an apocalyptic number.

It is an amenable number.

28165818337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28165818337 is an equidigital number, since it uses as much as digits as its factorization.

28165818337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The spelling of 28165818337 in words is "twenty-eight billion, one hundred sixty-five million, eight hundred eighteen thousand, three hundred thirty-seven".