66766008712 has 32 divisors (see below), whose sum is σ = 140677548480. Its totient is φ = 29475293760.

The previous prime is 66766008679. The next prime is 66766008733. The reversal of 66766008712 is 21780066766.

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, 13953714 + ... + 13958497.

It is an arithmetic number, because the mean of its divisors is an integer number (4396173390).

Almost surely, 2^66766008712 is an apocalyptic number.

It is an amenable number.

66766008712 is an abundant number, since it is smaller than the sum of its proper divisors (73911539768).

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

66766008712 is a wasteful number, since it uses less digits than its factorization.

66766008712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27912253 (or 27912249 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 66766008712 in words is "sixty-six billion, seven hundred sixty-six million, eight thousand, seven hundred twelve".