66671102208 has 72 divisors (see below), whose sum is σ = 177485327488. Its totient is φ = 22218319872.

The previous prime is 66671102177. The next prime is 66671102249. The reversal of 66671102208 is 80220117666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4329210 + ... + 4344582.

Almost surely, 2^66671102208 is an apocalyptic number.

It is an amenable number.

66671102208 is an abundant number, since it is smaller than the sum of its proper divisors (110814225280).

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

66671102208 is a wasteful number, since it uses less digits than its factorization.

66671102208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21039 (or 21025 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 66671102208 in words is "sixty-six billion, six hundred seventy-one million, one hundred two thousand, two hundred eight".