12615238146 has 32 divisors (see below), whose sum is σ = 29764988928. Its totient is φ = 3488083920.

The previous prime is 12615238123. The next prime is 12615238193. The reversal of 12615238146 is 64183251621.

12615238146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4843260 + ... + 4845863.

It is an arithmetic number, because the mean of its divisors is an integer number (930155904).

Almost surely, 2^12615238146 is an apocalyptic number.

12615238146 is an abundant number, since it is smaller than the sum of its proper divisors (17149750782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12615238146 is a wasteful number, since it uses less digits than its factorization.

12615238146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9689166.

The product of its digits is 69120, while the sum is 39.

Adding to 12615238146 its reverse (64183251621), we get a palindrome (76798489767).

The spelling of 12615238146 in words is "twelve billion, six hundred fifteen million, two hundred thirty-eight thousand, one hundred forty-six".