66000666006 has 48 divisors (see below), whose sum is σ = 165178145808. Its totient is φ = 18823718400.

The previous prime is 66000665993. The next prime is 66000666007. The reversal of 66000666006 is 60066600066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000666007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9800655 + ... + 9807386.

It is an arithmetic number, because the mean of its divisors is an integer number (3441211371).

Almost surely, 2^66000666006 is an apocalyptic number.

66000666006 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66000666006 is an abundant number, since it is smaller than the sum of its proper divisors (99177479802).

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

66000666006 is a wasteful number, since it uses less digits than its factorization.

66000666006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19608077 (or 19608074 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 66000666006 in words is "sixty-six billion, six hundred sixty-six thousand, six".