228209616168 has 64 divisors (see below), whose sum is σ = 599570304960. Its totient is φ = 72292663296.

The previous prime is 228209616143. The next prime is 228209616263. The reversal of 228209616168 is 861616902822.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 228209616168.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950105 + ... + 3026472.

It is an arithmetic number, because the mean of its divisors is an integer number (9368286015).

Almost surely, 2^228209616168 is an apocalyptic number.

It is an amenable number.

228209616168 is an abundant number, since it is smaller than the sum of its proper divisors (371360688792).

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

228209616168 is a wasteful number, since it uses less digits than its factorization.

228209616168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976666 (or 5976662 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 228209616168 in words is "two hundred twenty-eight billion, two hundred nine million, six hundred sixteen thousand, one hundred sixty-eight".