667406666666 has 32 divisors (see below), whose sum is σ = 1042495453440. Its totient is φ = 320169934656.

The previous prime is 667406666627. The next prime is 667406666683. The reversal of 667406666666 is 666666604766.

667406666666 is a modest number, since divided by 6666666 gives 66740 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4587641 + ... + 4730883.

It is an arithmetic number, because the mean of its divisors is an integer number (32577982920).

Almost surely, 2^667406666666 is an apocalyptic number.

667406666666 is a deficient number, since it is larger than the sum of its proper divisors (375088786774).

667406666666 is a wasteful number, since it uses less digits than its factorization.

667406666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144158.

The product of its (nonzero) digits is 282175488, while the sum is 65.

The spelling of 667406666666 in words is "six hundred sixty-seven billion, four hundred six million, six hundred sixty-six thousand, six hundred sixty-six".