8646661028228 has 24 divisors (see below), whose sum is σ = 15790121329920. Its totient is φ = 4135211277120.

The previous prime is 8646661028197. The next prime is 8646661028231. The reversal of 8646661028228 is 8228201666468.

It is a happy number.

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, 914528 + ... + 4257896.

It is an arithmetic number, because the mean of its divisors is an integer number (657921722080).

Almost surely, 2^{8646661028228} is an apocalyptic number.

It is an amenable number.

8646661028228 is a deficient number, since it is larger than the sum of its proper divisors (7143460301692).

8646661028228 is a wasteful number, since it uses less digits than its factorization.

8646661028228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371507 (or 3371505 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 59.

The spelling of 8646661028228 in words is "eight trillion, six hundred forty-six billion, six hundred sixty-one million, twenty-eight thousand, two hundred twenty-eight".