164021738268 has 12 divisors (see below), whose sum is σ = 382717389320. Its totient is φ = 54673912752.

The previous prime is 164021738263. The next prime is 164021738303. The reversal of 164021738268 is 862837120461.

164021738268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164021738263) 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 3 ways as a sum of consecutive naturals, for example, 6834239083 + ... + 6834239106.

Almost surely, 2^164021738268 is an apocalyptic number.

It is an amenable number.

164021738268 is an abundant number, since it is smaller than the sum of its proper divisors (218695651052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164021738268 is a wasteful number, since it uses less digits than its factorization.

164021738268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13668478196 (or 13668478194 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 164021738268 in words is "one hundred sixty-four billion, twenty-one million, seven hundred thirty-eight thousand, two hundred sixty-eight".