164544308839 has 8 divisors (see below), whose sum is σ = 173617920000. Its totient is φ = 155512036152.

The previous prime is 164544308837. The next prime is 164544308843. The reversal of 164544308839 is 938803445461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164544308839 - 2¹ = 164544308837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164544308839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164544308837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10326439 + ... + 10342360.

It is an arithmetic number, because the mean of its divisors is an integer number (21702240000).

Almost surely, 2^164544308839 is an apocalyptic number.

164544308839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

164544308839 is a deficient number, since it is larger than the sum of its proper divisors (9073611161).

164544308839 is a wasteful number, since it uses less digits than its factorization.

164544308839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20669237.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 164544308839 in words is "one hundred sixty-four billion, five hundred forty-four million, three hundred eight thousand, eight hundred thirty-nine".