228748543329 has 4 divisors (see below), whose sum is σ = 304998057776. Its totient is φ = 152499028884.

The previous prime is 228748543319. The next prime is 228748543333. The reversal of 228748543329 is 923345847822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228748543329 - 2⁴ = 228748543313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228748543319) 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, 38124757219 + ... + 38124757224.

It is an arithmetic number, because the mean of its divisors is an integer number (76249514444).

Almost surely, 2^228748543329 is an apocalyptic number.

It is an amenable number.

228748543329 is a deficient number, since it is larger than the sum of its proper divisors (76249514447).

228748543329 is an equidigital number, since it uses as much as digits as its factorization.

228748543329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76249514446.

The product of its digits is 23224320, while the sum is 57.

The spelling of 228748543329 in words is "two hundred twenty-eight billion, seven hundred forty-eight million, five hundred forty-three thousand, three hundred twenty-nine".