164795399439 has 8 divisors (see below), whose sum is σ = 239702399232. Its totient is φ = 99875999640.

The previous prime is 164795399423. The next prime is 164795399443. The reversal of 164795399439 is 934993597461.

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

It is not a de Polignac number, because 164795399439 - 2⁴ = 164795399423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164795399479) 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, 2496899959 + ... + 2496900024.

It is an arithmetic number, because the mean of its divisors is an integer number (29962799904).

Almost surely, 2^164795399439 is an apocalyptic number.

164795399439 is a deficient number, since it is larger than the sum of its proper divisors (74906999793).

164795399439 is a wasteful number, since it uses less digits than its factorization.

164795399439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993799997.

The product of its digits is 198404640, while the sum is 69.

The spelling of 164795399439 in words is "one hundred sixty-four billion, seven hundred ninety-five million, three hundred ninety-nine thousand, four hundred thirty-nine".