66842876718 has 12 divisors (see below), whose sum is σ = 144826232928. Its totient is φ = 22280958900.

The previous prime is 66842876701. The next prime is 66842876719. The reversal of 66842876718 is 81767824866.

66842876718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66842876719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1856746558 + ... + 1856746593.

It is an arithmetic number, because the mean of its divisors is an integer number (12068852744).

Almost surely, 2^66842876718 is an apocalyptic number.

66842876718 is an abundant number, since it is smaller than the sum of its proper divisors (77983356210).

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

66842876718 is a wasteful number, since it uses less digits than its factorization.

66842876718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713493159 (or 3713493156 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 66842876718 in words is "sixty-six billion, eight hundred forty-two million, eight hundred seventy-six thousand, seven hundred eighteen".