168644665626 has 16 divisors (see below), whose sum is σ = 337293396000. Its totient is φ = 56214211088.

The previous prime is 168644665577. The next prime is 168644665639. The reversal of 168644665626 is 626566446861.

It is a self number, because there is not a number n which added to its sum of digits gives 168644665626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775405 + ... + 968783.

It is an arithmetic number, because the mean of its divisors is an integer number (21080837250).

Almost surely, 2^168644665626 is an apocalyptic number.

168644665626 is an abundant number, since it is smaller than the sum of its proper divisors (168648730374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168644665626 is a wasteful number, since it uses less digits than its factorization.

168644665626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338733.

The product of its digits is 59719680, while the sum is 60.

The spelling of 168644665626 in words is "one hundred sixty-eight billion, six hundred forty-four million, six hundred sixty-five thousand, six hundred twenty-six".