66804083706 has 16 divisors (see below), whose sum is σ = 136715334624. Its totient is φ = 21750166704.

The previous prime is 66804083699. The next prime is 66804083737. The reversal of 66804083706 is 60738040866.

It is a happy number.

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, 129465021 + ... + 129465536.

It is an arithmetic number, because the mean of its divisors is an integer number (8544708414).

Almost surely, 2^66804083706 is an apocalyptic number.

66804083706 is an abundant number, since it is smaller than the sum of its proper divisors (69911250918).

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

66804083706 is a wasteful number, since it uses less digits than its factorization.

66804083706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258930605.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 66804083706 in words is "sixty-six billion, eight hundred four million, eighty-three thousand, seven hundred six".