12165061438 has 16 divisors (see below), whose sum is σ = 18650160000. Its totient is φ = 5949378072.

The previous prime is 12165061417. The next prime is 12165061451. The reversal of 12165061438 is 83416056121.

It is a happy number.

12165061438 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 = 12165061397 and 12165061406.

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, 235548 + ... + 282511.

It is an arithmetic number, because the mean of its divisors is an integer number (1165635000).

Almost surely, 2^12165061438 is an apocalyptic number.

12165061438 is a deficient number, since it is larger than the sum of its proper divisors (6485098562).

12165061438 is a wasteful number, since it uses less digits than its factorization.

12165061438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518319.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 12165061438 in words is "twelve billion, one hundred sixty-five million, sixty-one thousand, four hundred thirty-eight".