66561608108014 has 8 divisors (see below), whose sum is σ = 104183386603920. Its totient is φ = 31833812573376.

The previous prime is 66561608107921. The next prime is 66561608108033. The reversal of 66561608108014 is 41080180616566.

66561608108014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723495740259 + ... + 723495740350.

It is an arithmetic number, because the mean of its divisors is an integer number (13022923325490).

Almost surely, 2^{66561608108014} is an apocalyptic number.

66561608108014 is a deficient number, since it is larger than the sum of its proper divisors (37621778495906).

66561608108014 is a wasteful number, since it uses less digits than its factorization.

66561608108014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446991480634.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 66561608108014 in words is "sixty-six trillion, five hundred sixty-one billion, six hundred eight million, one hundred eight thousand, fourteen".