8866646204420 has 24 divisors (see below), whose sum is σ = 18620064930264. Its totient is φ = 3546637929216.

The previous prime is 8866646204419. The next prime is 8866646204519. The reversal of 8866646204420 is 244026466688.

It can be written as a sum of positive squares in 4 ways, for example, as 3322957118404 + 5543689086016 = 1822898^2 + 2354504^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 2529224 + ... + 4912256.

It is an arithmetic number, because the mean of its divisors is an integer number (775836038761).

Almost surely, 2^{8866646204420} is an apocalyptic number.

It is an amenable number.

8866646204420 is an abundant number, since it is smaller than the sum of its proper divisors (9753418725844).

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

8866646204420 is a wasteful number, since it uses less digits than its factorization.

8866646204420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569079 (or 2569077 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 8866646204420 in words is "eight trillion, eight hundred sixty-six billion, six hundred forty-six million, two hundred four thousand, four hundred twenty".