12164345671 has 4 divisors (see below), whose sum is σ = 12164850144. Its totient is φ = 12163841200.

The previous prime is 12164345651. The next prime is 12164345681. The reversal of 12164345671 is 17654346121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17654346121 = 1607 ⋅10985903.

It is a cyclic number.

It is not a de Polignac number, because 12164345671 - 2²¹ = 12162248519 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 (12164345621) 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, 214150 + ... + 264931.

It is an arithmetic number, because the mean of its divisors is an integer number (3041212536).

Almost surely, 2^12164345671 is an apocalyptic number.

12164345671 is a deficient number, since it is larger than the sum of its proper divisors (504473).

12164345671 is an equidigital number, since it uses as much as digits as its factorization.

12164345671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504472.

The product of its digits is 120960, while the sum is 40.

The spelling of 12164345671 in words is "twelve billion, one hundred sixty-four million, three hundred forty-five thousand, six hundred seventy-one".