6667971165205 has 16 divisors (see below), whose sum is σ = 9145666183680. Its totient is φ = 4571813077632.

The previous prime is 6667971165179. The next prime is 6667971165341. The reversal of 6667971165205 is 5025611797666.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6667971165205 - 2⁹ = 6667971164693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10306749 + ... + 10934578.

It is an arithmetic number, because the mean of its divisors is an integer number (571604136480).

Almost surely, 2^{6667971165205} is an apocalyptic number.

It is an amenable number.

6667971165205 is a deficient number, since it is larger than the sum of its proper divisors (2477695018475).

6667971165205 is a wasteful number, since it uses less digits than its factorization.

6667971165205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250308.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 6667971165205 in words is "six trillion, six hundred sixty-seven billion, nine hundred seventy-one million, one hundred sixty-five thousand, two hundred five".