12164444405 has 8 divisors (see below), whose sum is σ = 14703883992. Its totient is φ = 9660521728.

The previous prime is 12164444399. The next prime is 12164444419. The reversal of 12164444405 is 50444446121.

It can be written as a sum of positive squares in 4 ways, for example, as 12909649 + 12151534756 = 3593^2 + 110234^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12164444405 - 2⁴ = 12164444389 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 8878472 + ... + 8879841.

It is an arithmetic number, because the mean of its divisors is an integer number (1837985499).

Almost surely, 2^12164444405 is an apocalyptic number.

It is an amenable number.

12164444405 is a deficient number, since it is larger than the sum of its proper divisors (2539439587).

12164444405 is a wasteful number, since it uses less digits than its factorization.

12164444405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17758455.

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 12164444405 in words is "twelve billion, one hundred sixty-four million, four hundred forty-four thousand, four hundred five".