228144245243 has 4 divisors (see below), whose sum is σ = 228499058088. Its totient is φ = 227789432400.

The previous prime is 228144245177. The next prime is 228144245269. The reversal of 228144245243 is 342542441822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228144245243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228144245243.

It is not an unprimeable number, because it can be changed into a prime (228144245743) 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, 177405458 + ... + 177406743.

It is an arithmetic number, because the mean of its divisors is an integer number (57124764522).

Almost surely, 2^228144245243 is an apocalyptic number.

228144245243 is a deficient number, since it is larger than the sum of its proper divisors (354812845).

228144245243 is an equidigital number, since it uses as much as digits as its factorization.

228144245243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354812844.

The product of its digits is 491520, while the sum is 41.

The spelling of 228144245243 in words is "two hundred twenty-eight billion, one hundred forty-four million, two hundred forty-five thousand, two hundred forty-three".