66766775008076 has 72 divisors (see below), whose sum is σ = 138027724257024. Its totient is φ = 28013068175040.

The previous prime is 66766775008069. The next prime is 66766775008117. The reversal of 66766775008076 is 67080057766766.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241554185 + ... + 241830431.

It is an arithmetic number, because the mean of its divisors is an integer number (1917051725792).

Almost surely, 2^{66766775008076} is an apocalyptic number.

It is an amenable number.

66766775008076 is an abundant number, since it is smaller than the sum of its proper divisors (71260949248948).

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

66766775008076 is a wasteful number, since it uses less digits than its factorization.

66766775008076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308791 (or 308776 counting only the distinct ones).

The product of its (nonzero) digits is 746807040, while the sum is 71.

The spelling of 66766775008076 in words is "sixty-six trillion, seven hundred sixty-six billion, seven hundred seventy-five million, eight thousand, seventy-six".