164315344128 has 144 divisors (see below), whose sum is σ = 471239588736. Its totient is φ = 50528378880.

The previous prime is 164315344117. The next prime is 164315344181. The reversal of 164315344128 is 821443513461.

It is a self number, because there is not a number n which added to its sum of digits gives 164315344128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21371901 + ... + 21379587.

It is an arithmetic number, because the mean of its divisors is an integer number (3272497144).

Almost surely, 2^164315344128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164315344128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235619794368).

164315344128 is an abundant number, since it is smaller than the sum of its proper divisors (306924244608).

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

164315344128 is a wasteful number, since it uses less digits than its factorization.

164315344128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 9846 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

Adding to 164315344128 its reverse (821443513461), we get a palindrome (985758857589).

The spelling of 164315344128 in words is "one hundred sixty-four billion, three hundred fifteen million, three hundred forty-four thousand, one hundred twenty-eight".