12018044166243 has 4 divisors (see below), whose sum is σ = 16024058888328. Its totient is φ = 8012029444160.

The previous prime is 12018044166239. The next prime is 12018044166257. The reversal of 12018044166243 is 34266144081021.

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

It is a cyclic number.

It is not a de Polignac number, because 12018044166243 - 2² = 12018044166239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12018044166195 and 12018044166204.

It is not an unprimeable number, because it can be changed into a prime (12018044166743) 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, 2003007361038 + ... + 2003007361043.

It is an arithmetic number, because the mean of its divisors is an integer number (4006014722082).

Almost surely, 2^{12018044166243} is an apocalyptic number.

12018044166243 is a deficient number, since it is larger than the sum of its proper divisors (4006014722085).

12018044166243 is an equidigital number, since it uses as much as digits as its factorization.

12018044166243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006014722084.

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 12018044166243 in words is "twelve trillion, eighteen billion, forty-four million, one hundred sixty-six thousand, two hundred forty-three".