12504139028 has 12 divisors (see below), whose sum is σ = 22013275872. Its totient is φ = 6214631640.

The previous prime is 12504138971. The next prime is 12504139031. The reversal of 12504139028 is 82093140521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9358718 + ... + 9360053.

It is an arithmetic number, because the mean of its divisors is an integer number (1834439656).

Almost surely, 2^12504139028 is an apocalyptic number.

It is an amenable number.

12504139028 is a deficient number, since it is larger than the sum of its proper divisors (9509136844).

12504139028 is a wasteful number, since it uses less digits than its factorization.

12504139028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18718942 (or 18718940 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 12504139028 its reverse (82093140521), we get a palindrome (94597279549).

The spelling of 12504139028 in words is "twelve billion, five hundred four million, one hundred thirty-nine thousand, twenty-eight".