6668136012 has 12 divisors (see below), whose sum is σ = 15558984056. Its totient is φ = 2222712000.

The previous prime is 6668135993. The next prime is 6668136061. The reversal of 6668136012 is 2106318666.

It is a tau number, because it is divible by the number of its divisors (12).

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, 277838989 + ... + 277839012.

Almost surely, 2^6668136012 is an apocalyptic number.

It is an amenable number.

6668136012 is an abundant number, since it is smaller than the sum of its proper divisors (8890848044).

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

6668136012 is a wasteful number, since it uses less digits than its factorization.

6668136012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555678008 (or 555678006 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 6668136012 is about 81658.6554628473. The cubic root of 6668136012 is about 1882.2103182947.

The spelling of 6668136012 in words is "six billion, six hundred sixty-eight million, one hundred thirty-six thousand, twelve".