66176728121606 has 8 divisors (see below), whose sum is σ = 99265128550200. Its totient is φ = 33088351938208.

The previous prime is 66176728121597. The next prime is 66176728121653. The reversal of 66176728121606 is 60612182767166.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4315070 + ... + 12287118.

It is an arithmetic number, because the mean of its divisors is an integer number (12408141068775).

Almost surely, 2^{66176728121606} is an apocalyptic number.

66176728121606 is a deficient number, since it is larger than the sum of its proper divisors (33088400428594).

66176728121606 is a wasteful number, since it uses less digits than its factorization.

66176728121606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12122598.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 66176728121606 in words is "sixty-six trillion, one hundred seventy-six billion, seven hundred twenty-eight million, one hundred twenty-one thousand, six hundred six".