6666668999998 has 64 divisors (see below), whose sum is σ = 11576528732160. Its totient is φ = 2820404642400.

The previous prime is 6666668999971. The next prime is 6666669000023. The reversal of 6666668999998 is 8999998666666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1527998965 + ... + 1528003327.

It is an arithmetic number, because the mean of its divisors is an integer number (180883261440).

Almost surely, 2^{6666668999998} is an apocalyptic number.

6666668999998 is a deficient number, since it is larger than the sum of its proper divisors (4909859732162).

6666668999998 is a wasteful number, since it uses less digits than its factorization.

6666668999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813.

The product of its digits is 176319369216, while the sum is 97.

The spelling of 6666668999998 in words is "six trillion, six hundred sixty-six billion, six hundred sixty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-eight".