168385697571 has 32 divisors (see below), whose sum is σ = 278342281728. Its totient is φ = 88170497280.

The previous prime is 168385697497. The next prime is 168385697609. The reversal of 168385697571 is 175796583861.

It is a happy number.

168385697571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168385697571 - 2¹⁹ = 168385173283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168385697671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2213685 + ... + 2288486.

It is an arithmetic number, because the mean of its divisors is an integer number (8698196304).

Almost surely, 2^168385697571 is an apocalyptic number.

168385697571 is a deficient number, since it is larger than the sum of its proper divisors (109956584157).

168385697571 is a wasteful number, since it uses less digits than its factorization.

168385697571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502331.

The product of its digits is 76204800, while the sum is 66.

The spelling of 168385697571 in words is "one hundred sixty-eight billion, three hundred eighty-five million, six hundred ninety-seven thousand, five hundred seventy-one".