66006767675209 has 16 divisors (see below), whose sum is σ = 67343814720000. Its totient is φ = 64673174644416.

The previous prime is 66006767675207. The next prime is 66006767675227. The reversal of 66006767675209 is 90257676760066.

It is a cyclic number.

It is not a de Polignac number, because 66006767675209 - 2¹ = 66006767675207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66006767675207) 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, 114566352 + ... + 115141054.

It is an arithmetic number, because the mean of its divisors is an integer number (4208988420000).

Almost surely, 2^{66006767675209} is an apocalyptic number.

It is an amenable number.

66006767675209 is a deficient number, since it is larger than the sum of its proper divisors (1337047044791).

66006767675209 is a wasteful number, since it uses less digits than its factorization.

66006767675209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577704.

The product of its (nonzero) digits is 240045120, while the sum is 67.

The spelling of 66006767675209 in words is "sixty-six trillion, six billion, seven hundred sixty-seven million, six hundred seventy-five thousand, two hundred nine".