64717168161 has 32 divisors (see below), whose sum is σ = 90017257600. Its totient is φ = 41318678016.

The previous prime is 64717168133. The next prime is 64717168169. The reversal of 64717168161 is 16186171746.

It is not a de Polignac number, because 64717168161 - 2⁹ = 64717167649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64717168161.

It is not an unprimeable number, because it can be changed into a prime (64717168169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11874165 + ... + 11879613.

It is an arithmetic number, because the mean of its divisors is an integer number (2813039300).

Almost surely, 2^64717168161 is an apocalyptic number.

It is an amenable number.

64717168161 is a deficient number, since it is larger than the sum of its proper divisors (25300089439).

64717168161 is a wasteful number, since it uses less digits than its factorization.

64717168161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153.

The product of its digits is 338688, while the sum is 48.

The spelling of 64717168161 in words is "sixty-four billion, seven hundred seventeen million, one hundred sixty-eight thousand, one hundred sixty-one".