7982544666 has 8 divisors (see below), whose sum is σ = 15965089344. Its totient is φ = 2660848220.

The previous prime is 7982544649. The next prime is 7982544677. The reversal of 7982544666 is 6664452897.

It is a sphenic number, since it is the product of 3 distinct primes.

7982544666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665212050 + ... + 665212061.

It is an arithmetic number, because the mean of its divisors is an integer number (1995636168).

Almost surely, 2^7982544666 is an apocalyptic number.

7982544666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7982544666 is a wasteful number, since it uses less digits than its factorization.

7982544666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330424116.

The product of its digits is 17418240, while the sum is 57.

The square root of 7982544666 is about 89345.0875314362. The cubic root of 7982544666 is about 1998.5443296022.

The spelling of 7982544666 in words is "seven billion, nine hundred eighty-two million, five hundred forty-four thousand, six hundred sixty-six".