28667608433 has 2 divisors, whose sum is σ = 28667608434. Its totient is φ = 28667608432.

The previous prime is 28667608397. The next prime is 28667608439. The reversal of 28667608433 is 33480676682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19256280289 + 9411328144 = 138767^2 + 97012^2 .

It is a cyclic number.

It is not a de Polignac number, because 28667608433 - 2⁶ = 28667608369 is a prime.

It is not a weakly prime, because it can be changed into another prime (28667608439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14333804216 + 14333804217.

It is an arithmetic number, because the mean of its divisors is an integer number (14333804217).

Almost surely, 2^28667608433 is an apocalyptic number.

It is an amenable number.

28667608433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28667608433 is an equidigital number, since it uses as much as digits as its factorization.

28667608433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 28667608433 in words is "twenty-eight billion, six hundred sixty-seven million, six hundred eight thousand, four hundred thirty-three".