8380942666 has 16 divisors (see below), whose sum is σ = 12754272960. Its totient is φ = 4129572160.

The previous prime is 8380942639. The next prime is 8380942673. The reversal of 8380942666 is 6662490838.

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, 331005 + ... + 355423.

It is an arithmetic number, because the mean of its divisors is an integer number (797142060).

Almost surely, 2^8380942666 is an apocalyptic number.

8380942666 is a deficient number, since it is larger than the sum of its proper divisors (4373330294).

8380942666 is a wasteful number, since it uses less digits than its factorization.

8380942666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26909.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The square root of 8380942666 is about 91547.4885837946. The cubic root of 8380942666 is about 2031.2542635006.

The spelling of 8380942666 in words is "eight billion, three hundred eighty million, nine hundred forty-two thousand, six hundred sixty-six".