12111644162 has 4 divisors (see below), whose sum is σ = 18167466246. Its totient is φ = 6055822080.

The previous prime is 12111644161. The next prime is 12111644173. The reversal of 12111644162 is 26144611121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10980734521 + 1130909641 = 104789^2 + 33629^2 .

It is not an unprimeable number, because it can be changed into a prime (12111644161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3027911039 + ... + 3027911042.

Almost surely, 2^12111644162 is an apocalyptic number.

12111644162 is a deficient number, since it is larger than the sum of its proper divisors (6055822084).

12111644162 is an equidigital number, since it uses as much as digits as its factorization.

12111644162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055822083.

The product of its digits is 2304, while the sum is 29.

The spelling of 12111644162 in words is "twelve billion, one hundred eleven million, six hundred forty-four thousand, one hundred sixty-two".