164335970165 has 4 divisors (see below), whose sum is σ = 197203164204. Its totient is φ = 131468776128.

The previous prime is 164335970147. The next prime is 164335970171. The reversal of 164335970165 is 561079533461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61540709476 + 102795260689 = 248074^2 + 320617^2 .

It is a cyclic number.

It is not a de Polignac number, because 164335970165 - 2³⁰ = 163262228341 is a prime.

It is a super-2 number, since 2×164335970165² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16433597012 + ... + 16433597021.

It is an arithmetic number, because the mean of its divisors is an integer number (49300791051).

Almost surely, 2^164335970165 is an apocalyptic number.

It is an amenable number.

164335970165 is a deficient number, since it is larger than the sum of its proper divisors (32867194039).

164335970165 is an equidigital number, since it uses as much as digits as its factorization.

164335970165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867194038.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 164335970165 in words is "one hundred sixty-four billion, three hundred thirty-five million, nine hundred seventy thousand, one hundred sixty-five".