28455622271 has 4 divisors (see below), whose sum is σ = 28922107944. Its totient is φ = 27989136600.

The previous prime is 28455622267. The next prime is 28455622369. The reversal of 28455622271 is 17222655482.

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 28455622271 - 2² = 28455622267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28455625271) 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, 233242745 + ... + 233242866.

It is an arithmetic number, because the mean of its divisors is an integer number (7230526986).

Almost surely, 2^28455622271 is an apocalyptic number.

28455622271 is a deficient number, since it is larger than the sum of its proper divisors (466485673).

28455622271 is an equidigital number, since it uses as much as digits as its factorization.

28455622271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466485672.

The product of its digits is 537600, while the sum is 44.

The spelling of 28455622271 in words is "twenty-eight billion, four hundred fifty-five million, six hundred twenty-two thousand, two hundred seventy-one".