168401687039 has 8 divisors (see below), whose sum is σ = 173027116080. Its totient is φ = 163780154496.

The previous prime is 168401687033. The next prime is 168401687059. The reversal of 168401687039 is 930786104861.

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 168401687039 - 2²⁰ = 168400638463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168401687033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886394 + ... + 1059479.

It is an arithmetic number, because the mean of its divisors is an integer number (21628389510).

Almost surely, 2^168401687039 is an apocalyptic number.

168401687039 is a deficient number, since it is larger than the sum of its proper divisors (4625429041).

168401687039 is a wasteful number, since it uses less digits than its factorization.

168401687039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948249.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 168401687039 in words is "one hundred sixty-eight billion, four hundred one million, six hundred eighty-seven thousand, thirty-nine".