166011709967 has 8 divisors (see below), whose sum is σ = 172107186240. Its totient is φ = 159940962720.

The previous prime is 166011709957. The next prime is 166011709991. The reversal of 166011709967 is 769907110661.

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 166011709967 - 2⁸ = 166011709711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166011709957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6168584 + ... + 6195437.

It is an arithmetic number, because the mean of its divisors is an integer number (21513398280).

Almost surely, 2^166011709967 is an apocalyptic number.

166011709967 is a deficient number, since it is larger than the sum of its proper divisors (6095476273).

166011709967 is a wasteful number, since it uses less digits than its factorization.

166011709967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364513.

The product of its (nonzero) digits is 857304, while the sum is 53.

The spelling of 166011709967 in words is "one hundred sixty-six billion, eleven million, seven hundred nine thousand, nine hundred sixty-seven".