28667608479 has 16 divisors (see below), whose sum is σ = 42621683040. Its totient is φ = 19043720640.

The previous prime is 28667608477. The next prime is 28667608511. The reversal of 28667608479 is 97480676682.

It is not a de Polignac number, because 28667608479 - 2¹ = 28667608477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28667608477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1881672 + ... + 1896845.

It is an arithmetic number, because the mean of its divisors is an integer number (2663855190).

Almost surely, 2^28667608479 is an apocalyptic number.

28667608479 is a deficient number, since it is larger than the sum of its proper divisors (13954074561).

28667608479 is a wasteful number, since it uses less digits than its factorization.

28667608479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778807 (or 3778801 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 28667608479 in words is "twenty-eight billion, six hundred sixty-seven million, six hundred eight thousand, four hundred seventy-nine".