228271641085 has 4 divisors (see below), whose sum is σ = 273925969308. Its totient is φ = 182617312864.

The previous prime is 228271641079. The next prime is 228271641133. The reversal of 228271641085 is 580146172822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580146172822 = 2 ⋅290073086411.

It can be written as a sum of positive squares in 2 ways, for example, as 69760959129 + 158510681956 = 264123^2 + 398134^2 .

It is a cyclic number.

It is not a de Polignac number, because 228271641085 - 2⁵ = 228271641053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22827164104 + ... + 22827164113.

It is an arithmetic number, because the mean of its divisors is an integer number (68481492327).

Almost surely, 2^228271641085 is an apocalyptic number.

It is an amenable number.

228271641085 is a deficient number, since it is larger than the sum of its proper divisors (45654328223).

228271641085 is an equidigital number, since it uses as much as digits as its factorization.

228271641085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45654328222.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 228271641085 in words is "two hundred twenty-eight billion, two hundred seventy-one million, six hundred forty-one thousand, eighty-five".