12180688478 has 16 divisors (see below), whose sum is σ = 20882772864. Its totient is φ = 5219896920.

The previous prime is 12180688459. The next prime is 12180688493. The reversal of 12180688478 is 87488608121.

12180688478 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 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 7 ways as a sum of consecutive naturals, for example, 227633 + ... + 276003.

It is an arithmetic number, because the mean of its divisors is an integer number (1305173304).

Almost surely, 2^12180688478 is an apocalyptic number.

12180688478 is a deficient number, since it is larger than the sum of its proper divisors (8702084386).

12180688478 is a wasteful number, since it uses less digits than its factorization.

12180688478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66367.

The product of its (nonzero) digits is 1376256, while the sum is 53.

The spelling of 12180688478 in words is "twelve billion, one hundred eighty million, six hundred eighty-eight thousand, four hundred seventy-eight".