66656055716 has 12 divisors (see below), whose sum is σ = 117780604032. Its totient is φ = 33004454568.

The previous prime is 66656055707. The next prime is 66656055727. The reversal of 66656055716 is 61755065666.

It is a super-2 number, since 2×66656055716² (a number of 22 digits) contains 22 as substring.

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, 80892860 + ... + 80893683.

It is an arithmetic number, because the mean of its divisors is an integer number (9815050336).

Almost surely, 2^66656055716 is an apocalyptic number.

It is an amenable number.

66656055716 is a deficient number, since it is larger than the sum of its proper divisors (51124548316).

66656055716 is a wasteful number, since it uses less digits than its factorization.

66656055716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161786650 (or 161786648 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 66656055716 in words is "sixty-six billion, six hundred fifty-six million, fifty-five thousand, seven hundred sixteen".