66680530204 has 24 divisors (see below), whose sum is σ = 120562414560. Its totient is φ = 32244918336.

The previous prime is 66680530181. The next prime is 66680530219. The reversal of 66680530204 is 40203508666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324219 + ... + 1373650.

It is an arithmetic number, because the mean of its divisors is an integer number (5023433940).

Almost surely, 2^66680530204 is an apocalyptic number.

It is an amenable number.

66680530204 is a deficient number, since it is larger than the sum of its proper divisors (53881884356).

66680530204 is a wasteful number, since it uses less digits than its factorization.

66680530204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698077 (or 2698075 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 66680530204 in words is "sixty-six billion, six hundred eighty million, five hundred thirty thousand, two hundred four".