164989117904 has 40 divisors (see below), whose sum is σ = 344282547840. Its totient is φ = 76142982528.

The previous prime is 164989117901. The next prime is 164989117939. The reversal of 164989117904 is 409711989461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164989117901) 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 7 ways as a sum of consecutive naturals, for example, 3914189 + ... + 3956115.

It is an arithmetic number, because the mean of its divisors is an integer number (8607063696).

Almost surely, 2^164989117904 is an apocalyptic number.

It is an amenable number.

164989117904 is an abundant number, since it is smaller than the sum of its proper divisors (179293429936).

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

164989117904 is a wasteful number, since it uses less digits than its factorization.

164989117904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60867 (or 60861 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 59.

The spelling of 164989117904 in words is "one hundred sixty-four billion, nine hundred eighty-nine million, one hundred seventeen thousand, nine hundred four".