66311032006 has 4 divisors (see below), whose sum is σ = 99466548012. Its totient is φ = 33155516002.

The previous prime is 66311032001. The next prime is 66311032009. The reversal of 66311032006 is 60023011366.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66311032001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16577758000 + ... + 16577758003.

It is an arithmetic number, because the mean of its divisors is an integer number (24866637003).

Almost surely, 2^66311032006 is an apocalyptic number.

66311032006 is a deficient number, since it is larger than the sum of its proper divisors (33155516006).

66311032006 is a wasteful number, since it uses less digits than its factorization.

66311032006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33155516005.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 66311032006 in words is "sixty-six billion, three hundred eleven million, thirty-two thousand, six".