12163442906 has 8 divisors (see below), whose sum is σ = 18833718144. Its totient is φ = 5885536860.

The previous prime is 12163442839. The next prime is 12163442909. The reversal of 12163442906 is 60924436121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12163442906.

It is not an unprimeable number, because it can be changed into a prime (12163442909) 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, 98092220 + ... + 98092343.

It is an arithmetic number, because the mean of its divisors is an integer number (2354214768).

Almost surely, 2^12163442906 is an apocalyptic number.

12163442906 is a deficient number, since it is larger than the sum of its proper divisors (6670275238).

12163442906 is a wasteful number, since it uses less digits than its factorization.

12163442906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196184596.

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 12163442906 its sum of digits (38), we get a square (12163442944 = 110288²).

The spelling of 12163442906 in words is "twelve billion, one hundred sixty-three million, four hundred forty-two thousand, nine hundred six".