28188275534843 has 6 divisors (see below), whose sum is σ = 28301026910532. Its totient is φ = 28075971585500.

The previous prime is 28188275534833. The next prime is 28188275534851. The reversal of 28188275534843 is 34843557288182.

It is not a de Polignac number, because 28188275534843 - 2⁴ = 28188275534827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28188275534833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223649921 + ... + 223775922.

It is an arithmetic number, because the mean of its divisors is an integer number (4716837818422).

Almost surely, 2^{28188275534843} is an apocalyptic number.

28188275534843 is a deficient number, since it is larger than the sum of its proper divisors (112751375689).

28188275534843 is an frugal number, since it uses more digits than its factorization.

28188275534843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447426345 (or 447426094 counting only the distinct ones).

The product of its digits is 412876800, while the sum is 68.

The spelling of 28188275534843 in words is "twenty-eight trillion, one hundred eighty-eight billion, two hundred seventy-five million, five hundred thirty-four thousand, eight hundred forty-three".