66673633212 has 36 divisors (see below), whose sum is σ = 168956454576. Its totient is φ = 22169116800.

The previous prime is 66673633207. The next prime is 66673633231. The reversal of 66673633212 is 21233637666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2294848 + ... + 2323719.

Almost surely, 2^66673633212 is an apocalyptic number.

It is an amenable number.

66673633212 is an abundant number, since it is smaller than the sum of its proper divisors (102282821364).

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

66673633212 is a wasteful number, since it uses less digits than its factorization.

66673633212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618978 (or 4618973 counting only the distinct ones).

The product of its digits is 979776, while the sum is 45.

The spelling of 66673633212 in words is "sixty-six billion, six hundred seventy-three million, six hundred thirty-three thousand, two hundred twelve".