168866271824 has 10 divisors (see below), whose sum is σ = 327178401690. Its totient is φ = 84433135904.

The previous prime is 168866271737. The next prime is 168866271829. The reversal of 168866271824 is 428172668861.

It can be written as a sum of positive squares in only one way, i.e., 167880311824 + 985960000 = 409732^2 + 31400^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168866271829) 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 as a sum of consecutive naturals, namely, 5277070979 + ... + 5277071010.

It is an arithmetic number, because the mean of its divisors is an integer number (32717840169).

Almost surely, 2^168866271824 is an apocalyptic number.

It is an amenable number.

168866271824 is a deficient number, since it is larger than the sum of its proper divisors (158312129866).

168866271824 is a wasteful number, since it uses less digits than its factorization.

168866271824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10554141997 (or 10554141991 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 59.

The spelling of 168866271824 in words is "one hundred sixty-eight billion, eight hundred sixty-six million, two hundred seventy-one thousand, eight hundred twenty-four".