228668918856 has 32 divisors (see below), whose sum is σ = 653339768640. Its totient is φ = 65333976768.

The previous prime is 228668918837. The next prime is 228668918867. The reversal of 228668918856 is 658819866822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680562091 + ... + 680562426.

It is an arithmetic number, because the mean of its divisors is an integer number (20416867770).

Almost surely, 2^228668918856 is an apocalyptic number.

It is an amenable number.

228668918856 is an abundant number, since it is smaller than the sum of its proper divisors (424670849784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228668918856 is a wasteful number, since it uses less digits than its factorization.

228668918856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361124533 (or 1361124529 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 69.

The spelling of 228668918856 in words is "two hundred twenty-eight billion, six hundred sixty-eight million, nine hundred eighteen thousand, eight hundred fifty-six".