168516842667 has 16 divisors (see below), whose sum is σ = 237967994880. Its totient is φ = 105708563072.

The previous prime is 168516842621. The next prime is 168516842693. The reversal of 168516842667 is 766248615861.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 168516842667 - 2⁷ = 168516842539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168516842667.

It is not an unprimeable number, because it can be changed into a prime (168516842617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230667 + ... + 624692.

It is an arithmetic number, because the mean of its divisors is an integer number (14872999680).

Almost surely, 2^168516842667 is an apocalyptic number.

168516842667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

168516842667 is a deficient number, since it is larger than the sum of its proper divisors (69451152213).

168516842667 is a wasteful number, since it uses less digits than its factorization.

168516842667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859242.

The product of its digits is 23224320, while the sum is 60.

The spelling of 168516842667 in words is "one hundred sixty-eight billion, five hundred sixteen million, eight hundred forty-two thousand, six hundred sixty-seven".