6666863539318 has 16 divisors (see below), whose sum is σ = 10003076599824. Its totient is φ = 3332504786400.

The previous prime is 6666863539309. The next prime is 6666863539403. The reversal of 6666863539318 is 8139353686666.

It is a congruent 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, 238933168 + ... + 238961068.

It is an arithmetic number, because the mean of its divisors is an integer number (625192287489).

Almost surely, 2^{6666863539318} is an apocalyptic number.

6666863539318 is a deficient number, since it is larger than the sum of its proper divisors (3336213060506).

6666863539318 is a wasteful number, since it uses less digits than its factorization.

6666863539318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56847.

The product of its digits is 604661760, while the sum is 70.

The spelling of 6666863539318 in words is "six trillion, six hundred sixty-six billion, eight hundred sixty-three million, five hundred thirty-nine thousand, three hundred eighteen".