12015016426 has 32 divisors (see below), whose sum is σ = 20788161408. Its totient is φ = 5101753920.

The previous prime is 12015016417. The next prime is 12015016439. The reversal of 12015016426 is 62461051021.

12015016426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12015016394 and 12015016403.

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, 701181 + ... + 718111.

It is an arithmetic number, because the mean of its divisors is an integer number (649630044).

Almost surely, 2^12015016426 is an apocalyptic number.

12015016426 is a deficient number, since it is larger than the sum of its proper divisors (8773144982).

12015016426 is a wasteful number, since it uses less digits than its factorization.

12015016426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17406.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 12015016426 its reverse (62461051021), we get a palindrome (74476067447).

The spelling of 12015016426 in words is "twelve billion, fifteen million, sixteen thousand, four hundred twenty-six".