168666836667 has 8 divisors (see below), whose sum is σ = 257016132096. Its totient is φ = 96381049512.

The previous prime is 168666836617. The next prime is 168666836707. The reversal of 168666836667 is 766638666861.

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

It is not a de Polignac number, because 168666836667 - 2⁷ = 168666836539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168666836617) 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, 4015877043 + ... + 4015877084.

It is an arithmetic number, because the mean of its divisors is an integer number (32127016512).

Almost surely, 2^168666836667 is an apocalyptic number.

168666836667 is a deficient number, since it is larger than the sum of its proper divisors (88349295429).

168666836667 is an equidigital number, since it uses as much as digits as its factorization.

168666836667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031754137.

The product of its digits is 376233984, while the sum is 69.

The spelling of 168666836667 in words is "one hundred sixty-eight billion, six hundred sixty-six million, eight hundred thirty-six thousand, six hundred sixty-seven".