6456668666546 has 16 divisors (see below), whose sum is σ = 11078378759040. Its totient is φ = 2764692738720.

The previous prime is 6456668666537. The next prime is 6456668666573.

6456668666546 is nontrivially palindromic in base 10.

It is a Curzon 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, 204231590 + ... + 204263201.

It is an arithmetic number, because the mean of its divisors is an integer number (692398672440).

Almost surely, 2^{6456668666546} is an apocalyptic number.

6456668666546 is a deficient number, since it is larger than the sum of its proper divisors (4621710092494).

6456668666546 is a wasteful number, since it uses less digits than its factorization.

6456668666546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408495929.

The product of its digits is 5374771200, while the sum is 74.

The spelling of 6456668666546 in words is "six trillion, four hundred fifty-six billion, six hundred sixty-eight million, six hundred sixty-six thousand, five hundred forty-six".