164447101220 has 24 divisors (see below), whose sum is σ = 345348831744. Its totient is φ = 65776951136.

The previous prime is 164447101211. The next prime is 164447101237. The reversal of 164447101220 is 22101744461.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 751997 + ... + 945723.

It is an arithmetic number, because the mean of its divisors is an integer number (14389534656).

Almost surely, 2^164447101220 is an apocalyptic number.

164447101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164447101220 is an abundant number, since it is smaller than the sum of its proper divisors (180901730524).

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

164447101220 is a wasteful number, since it uses less digits than its factorization.

164447101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236179 (or 236177 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 164447101220 its reverse (22101744461), we get a palindrome (186548845681).

The spelling of 164447101220 in words is "one hundred sixty-four billion, four hundred forty-seven million, one hundred one thousand, two hundred twenty".