66802226668 has 24 divisors (see below), whose sum is σ = 117060768720. Its totient is φ = 33356328960.

The previous prime is 66802226657. The next prime is 66802226671. The reversal of 66802226668 is 86662220866.

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, 11992588 + ... + 11998156.

It is an arithmetic number, because the mean of its divisors is an integer number (4877532030).

Almost surely, 2^66802226668 is an apocalyptic number.

It is an amenable number.

66802226668 is a deficient number, since it is larger than the sum of its proper divisors (50258542052).

66802226668 is a wasteful number, since it uses less digits than its factorization.

66802226668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9057 (or 9055 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 66802226668 in words is "sixty-six billion, eight hundred two million, two hundred twenty-six thousand, six hundred sixty-eight".