164335288321 has 4 divisors (see below), whose sum is σ = 164468786944. Its totient is φ = 164201789700.

The previous prime is 164335288303. The next prime is 164335288343. The reversal of 164335288321 is 123882533461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123882533461 = 23 ⋅5386197107.

It is a cyclic number.

It is not a de Polignac number, because 164335288321 - 2⁵ = 164335288289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164335288361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66747465 + ... + 66749926.

It is an arithmetic number, because the mean of its divisors is an integer number (41117196736).

Almost surely, 2^164335288321 is an apocalyptic number.

It is an amenable number.

164335288321 is a deficient number, since it is larger than the sum of its proper divisors (133498623).

164335288321 is a wasteful number, since it uses less digits than its factorization.

164335288321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133498622.

The product of its digits is 829440, while the sum is 46.

The spelling of 164335288321 in words is "one hundred sixty-four billion, three hundred thirty-five million, two hundred eighty-eight thousand, three hundred twenty-one".