168017696969785 has 24 divisors (see below), whose sum is σ = 221304663710424. Its totient is φ = 121733576540160.

The previous prime is 168017696969753. The next prime is 168017696969827. The reversal of 168017696969785 is 587969696710861.

168017696969785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 262848985344 + 167754847984441 = 512688^2 + 12952021^2 .

It is not a de Polignac number, because 168017696969785 - 2⁵ = 168017696969753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168017696969696 and 168017696969705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459925576 + ... + 460290745.

It is an arithmetic number, because the mean of its divisors is an integer number (9221027654601).

Almost surely, 2^{168017696969785} is an apocalyptic number.

It is an amenable number.

168017696969785 is a deficient number, since it is larger than the sum of its proper divisors (53286966740639).

168017696969785 is an equidigital number, since it uses as much as digits as its factorization.

168017696969785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920216445 (or 920216392 counting only the distinct ones).

The product of its (nonzero) digits is 14814213120, while the sum is 88.

The spelling of 168017696969785 in words is "one hundred sixty-eight trillion, seventeen billion, six hundred ninety-six million, nine hundred sixty-nine thousand, seven hundred eighty-five".