6671217816812 has 24 divisors (see below), whose sum is σ = 11710659576000. Its totient is φ = 3325322938896.

The previous prime is 6671217816799. The next prime is 6671217816833. The reversal of 6671217816812 is 2186187121766.

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 7 ways as a sum of consecutive naturals, for example, 2419439 + ... + 4381337.

It is an arithmetic number, because the mean of its divisors is an integer number (487944149000).

Almost surely, 2^{6671217816812} is an apocalyptic number.

It is an amenable number.

6671217816812 is a deficient number, since it is larger than the sum of its proper divisors (5039441759188).

6671217816812 is a wasteful number, since it uses less digits than its factorization.

6671217816812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964525 (or 1964523 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 56.

The spelling of 6671217816812 in words is "six trillion, six hundred seventy-one billion, two hundred seventeen million, eight hundred sixteen thousand, eight hundred twelve".