12173811854 has 16 divisors (see below), whose sum is σ = 18825589728. Its totient is φ = 5899866912.

The previous prime is 12173811827. The next prime is 12173811857. The reversal of 12173811854 is 45811837121.

12173811854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173811857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293297 + ... + 332220.

It is an arithmetic number, because the mean of its divisors is an integer number (1176599358).

Almost surely, 2^12173811854 is an apocalyptic number.

12173811854 is a deficient number, since it is larger than the sum of its proper divisors (6651777874).

12173811854 is a wasteful number, since it uses less digits than its factorization.

12173811854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625819.

The product of its digits is 53760, while the sum is 41.

The spelling of 12173811854 in words is "twelve billion, one hundred seventy-three million, eight hundred eleven thousand, eight hundred fifty-four".