164220271271 has 4 divisors (see below), whose sum is σ = 187680310032. Its totient is φ = 140760232512.

The previous prime is 164220271253. The next prime is 164220271277. The reversal of 164220271271 is 172172022461.

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 164220271271 - 2¹⁸ = 164220009127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164220271277) 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, 11730019370 + ... + 11730019383.

It is an arithmetic number, because the mean of its divisors is an integer number (46920077508).

Almost surely, 2^164220271271 is an apocalyptic number.

164220271271 is a deficient number, since it is larger than the sum of its proper divisors (23460038761).

164220271271 is an equidigital number, since it uses as much as digits as its factorization.

164220271271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23460038760.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 164220271271 in words is "one hundred sixty-four billion, two hundred twenty million, two hundred seventy-one thousand, two hundred seventy-one".