66656056116001 has 16 divisors (see below), whose sum is σ = 74407447033920. Its totient is φ = 59186649453120.

The previous prime is 66656056115989. The next prime is 66656056116019. The reversal of 66656056116001 is 10061165065666.

It is a cyclic number.

It is not a de Polignac number, because 66656056116001 - 2⁵ = 66656056115969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66656059116001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55834935 + ... + 57016243.

It is an arithmetic number, because the mean of its divisors is an integer number (4650465439620).

Almost surely, 2^{66656056116001} is an apocalyptic number.

It is an amenable number.

66656056116001 is a deficient number, since it is larger than the sum of its proper divisors (7751390917919).

66656056116001 is a wasteful number, since it uses less digits than its factorization.

66656056116001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300656.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 66656056116001 in words is "sixty-six trillion, six hundred fifty-six billion, fifty-six million, one hundred sixteen thousand, one".