6660006665105 has 8 divisors (see below), whose sum is σ = 8267594481000. Its totient is φ = 5144281010176.

The previous prime is 6660006665027. The next prime is 6660006665131. The reversal of 6660006665105 is 5015666000666.

It can be written as a sum of positive squares in 4 ways, for example, as 2904886609 + 6657101778496 = 53897^2 + 2580136^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6660006665105 - 2²² = 6660002470801 is a prime.

It is a super-2 number, since 2×6660006665105² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6660006665105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22965540080 + ... + 22965540369.

It is an arithmetic number, because the mean of its divisors is an integer number (1033449310125).

Almost surely, 2^{6660006665105} is an apocalyptic number.

It is an amenable number.

6660006665105 is a deficient number, since it is larger than the sum of its proper divisors (1607587815895).

6660006665105 is a wasteful number, since it uses less digits than its factorization.

6660006665105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45931080483.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 6660006665105 in words is "six trillion, six hundred sixty billion, six million, six hundred sixty-five thousand, one hundred five".