12515044124 has 24 divisors (see below), whose sum is σ = 24343160688. Its totient is φ = 5581322240.

The previous prime is 12515044123. The next prime is 12515044141. The reversal of 12515044124 is 42144051521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515044121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680997 + ... + 2685660.

It is an arithmetic number, because the mean of its divisors is an integer number (1014298362).

Almost surely, 2^12515044124 is an apocalyptic number.

It is an amenable number.

12515044124 is a deficient number, since it is larger than the sum of its proper divisors (11828116564).

12515044124 is a wasteful number, since it uses less digits than its factorization.

12515044124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366725 (or 5366723 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 12515044124 its reverse (42144051521), we get a palindrome (54659095645).

The spelling of 12515044124 in words is "twelve billion, five hundred fifteen million, forty-four thousand, one hundred twenty-four".