28227122543 has 4 divisors (see below), whose sum is σ = 28486087080. Its totient is φ = 27968158008.

The previous prime is 28227122491. The next prime is 28227122569. The reversal of 28227122543 is 34522172282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28227122543 - 2²⁴ = 28210345327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28227122497 and 28227122506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28227124543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129482105 + ... + 129482322.

It is an arithmetic number, because the mean of its divisors is an integer number (7121521770).

Almost surely, 2^28227122543 is an apocalyptic number.

28227122543 is a deficient number, since it is larger than the sum of its proper divisors (258964537).

28227122543 is a wasteful number, since it uses less digits than its factorization.

28227122543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258964536.

The product of its digits is 107520, while the sum is 38.

The spelling of 28227122543 in words is "twenty-eight billion, two hundred twenty-seven million, one hundred twenty-two thousand, five hundred forty-three".