28422638163 has 12 divisors (see below), whose sum is σ = 41195044800. Its totient is φ = 18883753296.

The previous prime is 28422638161. The next prime is 28422638177. The reversal of 28422638163 is 36183622482.

28422638163 is a `hidden beast` number, since 2 + 8 + 4 + 2 + 2 + 638 + 1 + 6 + 3 = 666.

It is not a de Polignac number, because 28422638163 - 2¹ = 28422638161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28422638161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5386563 + ... + 5391836.

It is an arithmetic number, because the mean of its divisors is an integer number (3432920400).

Almost surely, 2^28422638163 is an apocalyptic number.

28422638163 is a deficient number, since it is larger than the sum of its proper divisors (12772406637).

28422638163 is a wasteful number, since it uses less digits than its factorization.

28422638163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10778698 (or 10778695 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 28422638163 in words is "twenty-eight billion, four hundred twenty-two million, six hundred thirty-eight thousand, one hundred sixty-three".