12171628742 has 32 divisors (see below), whose sum is σ = 22510801152. Its totient is φ = 4806556704.

The previous prime is 12171628739. The next prime is 12171628757. The reversal of 12171628742 is 24782617121.

12171628742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12171628742.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43073 + ... + 161859.

It is an arithmetic number, because the mean of its divisors is an integer number (703462536).

Almost surely, 2^12171628742 is an apocalyptic number.

12171628742 is a deficient number, since it is larger than the sum of its proper divisors (10339172410).

12171628742 is a wasteful number, since it uses less digits than its factorization.

12171628742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119372.

The product of its digits is 75264, while the sum is 41.

The spelling of 12171628742 in words is "twelve billion, one hundred seventy-one million, six hundred twenty-eight thousand, seven hundred forty-two".