7866484488666 has 32 divisors (see below), whose sum is σ = 17596845379200. Its totient is φ = 2604796185600.

The previous prime is 7866484488637. The next prime is 7866484488727. The reversal of 7866484488666 is 6668844846687.

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, 482361511 + ... + 482377818.

It is an arithmetic number, because the mean of its divisors is an integer number (549901418100).

Almost surely, 2^{7866484488666} is an apocalyptic number.

7866484488666 is an abundant number, since it is smaller than the sum of its proper divisors (9730360890534).

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

7866484488666 is a wasteful number, since it uses less digits than its factorization.

7866484488666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964739491 (or 964739485 counting only the distinct ones).

The product of its digits is 14269022208, while the sum is 81.

The spelling of 7866484488666 in words is "seven trillion, eight hundred sixty-six billion, four hundred eighty-four million, four hundred eighty-eight thousand, six hundred sixty-six".