164969910227 has 4 divisors (see below), whose sum is σ = 168993566616. Its totient is φ = 160946253840.

The previous prime is 164969910181. The next prime is 164969910247. The reversal of 164969910227 is 722019969461.

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

It is a cyclic number.

It is not a de Polignac number, because 164969910227 - 2²⁶ = 164902801363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164969910247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011828133 + ... + 2011828214.

It is an arithmetic number, because the mean of its divisors is an integer number (42248391654).

Almost surely, 2^164969910227 is an apocalyptic number.

164969910227 is a deficient number, since it is larger than the sum of its proper divisors (4023656389).

164969910227 is an equidigital number, since it uses as much as digits as its factorization.

164969910227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023656388.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 164969910227 in words is "one hundred sixty-four billion, nine hundred sixty-nine million, nine hundred ten thousand, two hundred twenty-seven".