168268219077 has 16 divisors (see below), whose sum is σ = 264679964672. Its totient is φ = 93051549360.

The previous prime is 168268219073. The next prime is 168268219111. The reversal of 168268219077 is 770912862861.

It is not a de Polignac number, because 168268219077 - 2² = 168268219073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168268219073) 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 15 ways as a sum of consecutive naturals, for example, 129237613 + ... + 129238914.

It is an arithmetic number, because the mean of its divisors is an integer number (16542497792).

Almost surely, 2^168268219077 is an apocalyptic number.

It is an amenable number.

168268219077 is a deficient number, since it is larger than the sum of its proper divisors (96411745595).

168268219077 is a wasteful number, since it uses less digits than its factorization.

168268219077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258476568.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 168268219077 in words is "one hundred sixty-eight billion, two hundred sixty-eight million, two hundred nineteen thousand, seventy-seven".