164445239408 has 20 divisors (see below), whose sum is σ = 318651615408. Its totient is φ = 82212564480.

The previous prime is 164445239363. The next prime is 164445239467. The reversal of 164445239408 is 804932544461.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 492641 + ... + 756032.

Almost surely, 2^164445239408 is an apocalyptic number.

It is an amenable number.

164445239408 is a deficient number, since it is larger than the sum of its proper divisors (154206376000).

164445239408 is a wasteful number, since it uses less digits than its factorization.

164445239408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256912 (or 1256906 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 164445239408 in words is "one hundred sixty-four billion, four hundred forty-five million, two hundred thirty-nine thousand, four hundred eight".