66868068212 has 12 divisors (see below), whose sum is σ = 127657221216. Its totient is φ = 30394576440.

The previous prime is 66868068203. The next prime is 66868068227. The reversal of 66868068212 is 21286086866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759864368 + ... + 759864455.

It is an arithmetic number, because the mean of its divisors is an integer number (10638101768).

Almost surely, 2^66868068212 is an apocalyptic number.

It is an amenable number.

66868068212 is a deficient number, since it is larger than the sum of its proper divisors (60789153004).

66868068212 is a wasteful number, since it uses less digits than its factorization.

66868068212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519728838 (or 1519728836 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 66868068212 in words is "sixty-six billion, eight hundred sixty-eight million, sixty-eight thousand, two hundred twelve".