166668516833667 has 8 divisors (see below), whose sum is σ = 222225752903424. Its totient is φ = 111111812659848.

The previous prime is 166668516833617. The next prime is 166668516833669. The reversal of 166668516833667 is 766338615866661.

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

It is not a de Polignac number, because 166668516833667 - 2¹⁸ = 166668516571523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166668516833592 and 166668516833601.

It is not an unprimeable number, because it can be changed into a prime (166668516833669) 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, 132242263 + ... + 133496640.

It is an arithmetic number, because the mean of its divisors is an integer number (27778219112928).

Almost surely, 2^{166668516833667} is an apocalyptic number.

166668516833667 is a deficient number, since it is larger than the sum of its proper divisors (55557236069757).

166668516833667 is a wasteful number, since it uses less digits than its factorization.

166668516833667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265947969.

The product of its digits is 5643509760, while the sum is 78.

The spelling of 166668516833667 in words is "one hundred sixty-six trillion, six hundred sixty-eight billion, five hundred sixteen million, eight hundred thirty-three thousand, six hundred sixty-seven".