12163446605 has 4 divisors (see below), whose sum is σ = 14596135932. Its totient is φ = 9730757280.

The previous prime is 12163446601. The next prime is 12163446611. The reversal of 12163446605 is 50664436121.

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 8910227236 + 3253219369 = 94394^2 + 57037^2 .

It is not a de Polignac number, because 12163446605 - 2² = 12163446601 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 (12163446601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1216344656 + ... + 1216344665.

It is an arithmetic number, because the mean of its divisors is an integer number (3649033983).

Almost surely, 2^12163446605 is an apocalyptic number.

It is an amenable number.

12163446605 is a deficient number, since it is larger than the sum of its proper divisors (2432689327).

12163446605 is an equidigital number, since it uses as much as digits as its factorization.

12163446605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432689326.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 12163446605 in words is "twelve billion, one hundred sixty-three million, four hundred forty-six thousand, six hundred five".