228661718688 has 192 divisors, whose sum is σ = 749460660480. Its totient is φ = 67298356224.

The previous prime is 228661718657. The next prime is 228661718699. The reversal of 228661718688 is 886817166822.

228661718688 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 617 + 1 + 8 + 6 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184231 + ... + 700902.

It is an arithmetic number, because the mean of its divisors is an integer number (3903440940).

Almost surely, 2^228661718688 is an apocalyptic number.

It is an amenable number.

228661718688 is an abundant number, since it is smaller than the sum of its proper divisors (520798941792).

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

228661718688 is a wasteful number, since it uses less digits than its factorization.

228661718688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885188 (or 885174 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 63.

The spelling of 228661718688 in words is "two hundred twenty-eight billion, six hundred sixty-one million, seven hundred eighteen thousand, six hundred eighty-eight".