164390844856 has 16 divisors (see below), whose sum is σ = 352266096240. Its totient is φ = 70453219200.

The previous prime is 164390844853. The next prime is 164390844857. The reversal of 164390844856 is 658448093461.

164390844856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164390844856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164390844853) 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 3 ways as a sum of consecutive naturals, for example, 1467775345 + ... + 1467775456.

It is an arithmetic number, because the mean of its divisors is an integer number (22016631015).

Almost surely, 2^164390844856 is an apocalyptic number.

It is an amenable number.

164390844856 is an abundant number, since it is smaller than the sum of its proper divisors (187875251384).

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

164390844856 is a wasteful number, since it uses less digits than its factorization.

164390844856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935550814 (or 2935550810 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 164390844856 in words is "one hundred sixty-four billion, three hundred ninety million, eight hundred forty-four thousand, eight hundred fifty-six".