228646668815 has 4 divisors (see below), whose sum is σ = 274376002584. Its totient is φ = 182917335048.

The previous prime is 228646668787. The next prime is 228646668911. The reversal of 228646668815 is 518866646822.

It is a happy number.

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 228646668815 - 2⁶ = 228646668751 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, 22864666877 + ... + 22864666886.

It is an arithmetic number, because the mean of its divisors is an integer number (68594000646).

Almost surely, 2^228646668815 is an apocalyptic number.

228646668815 is a deficient number, since it is larger than the sum of its proper divisors (45729333769).

228646668815 is an equidigital number, since it uses as much as digits as its factorization.

228646668815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45729333768.

The product of its digits is 53084160, while the sum is 62.

The spelling of 228646668815 in words is "two hundred twenty-eight billion, six hundred forty-six million, six hundred sixty-eight thousand, eight hundred fifteen".