12165143166242 has 16 divisors (see below), whose sum is σ = 20103692940864. Its totient is φ = 5474861910000.

The previous prime is 12165143166203. The next prime is 12165143166247. The reversal of 12165143166242 is 24266134156121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12165143166193 and 12165143166202.

It is not an unprimeable number, because it can be changed into a prime (12165143166247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2737428734 + ... + 2737433177.

It is an arithmetic number, because the mean of its divisors is an integer number (1256480808804).

Almost surely, 2^{12165143166242} is an apocalyptic number.

12165143166242 is a deficient number, since it is larger than the sum of its proper divisors (7938549774622).

12165143166242 is a wasteful number, since it uses less digits than its factorization.

12165143166242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474862025.

The product of its digits is 414720, while the sum is 44.

The spelling of 12165143166242 in words is "twelve trillion, one hundred sixty-five billion, one hundred forty-three million, one hundred sixty-six thousand, two hundred forty-two".