66826680684005 has 16 divisors (see below), whose sum is σ = 87499357272000. Its totient is φ = 48591690591360.

The previous prime is 66826680683999. The next prime is 66826680684017. The reversal of 66826680684005 is 50048608662866.

66826680684005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66826680684005 - 2⁴ = 66826680683989 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 118863560 + ... + 119424449.

It is an arithmetic number, because the mean of its divisors is an integer number (5468709829500).

Almost surely, 2^{66826680684005} is an apocalyptic number.

It is an amenable number.

66826680684005 is a deficient number, since it is larger than the sum of its proper divisors (20672676587995).

66826680684005 is a wasteful number, since it uses less digits than its factorization.

66826680684005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238293124.

The product of its (nonzero) digits is 159252480, while the sum is 65.

The spelling of 66826680684005 in words is "sixty-six trillion, eight hundred twenty-six billion, six hundred eighty million, six hundred eighty-four thousand, five".