228543541217 has 4 divisors (see below), whose sum is σ = 228719751876. Its totient is φ = 228367330560.

The previous prime is 228543541153. The next prime is 228543541231. The reversal of 228543541217 is 712145345822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 225583201936 + 2960339281 = 474956^2 + 54409^2 .

It is a cyclic number.

It is not a de Polignac number, because 228543541217 - 2⁶ = 228543541153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228543541297) 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, 88103384 + ... + 88105977.

It is an arithmetic number, because the mean of its divisors is an integer number (57179937969).

Almost surely, 2^228543541217 is an apocalyptic number.

It is an amenable number.

228543541217 is a deficient number, since it is larger than the sum of its proper divisors (176210659).

228543541217 is a wasteful number, since it uses less digits than its factorization.

228543541217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176210658.

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

The spelling of 228543541217 in words is "two hundred twenty-eight billion, five hundred forty-three million, five hundred forty-one thousand, two hundred seventeen".