164388218160 has 40 divisors (see below), whose sum is σ = 509603477040. Its totient is φ = 43836858112.

The previous prime is 164388218143. The next prime is 164388218201. The reversal of 164388218160 is 61812883461.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342475215 + ... + 342475694.

It is an arithmetic number, because the mean of its divisors is an integer number (12740086926).

Almost surely, 2^164388218160 is an apocalyptic number.

164388218160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164388218160 is an abundant number, since it is smaller than the sum of its proper divisors (345215258880).

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

164388218160 is a wasteful number, since it uses less digits than its factorization.

164388218160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684950925 (or 684950919 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 164388218160 in words is "one hundred sixty-four billion, three hundred eighty-eight million, two hundred eighteen thousand, one hundred sixty".