12489186812 has 12 divisors (see below), whose sum is σ = 21857650920. Its totient is φ = 6244143696.

The previous prime is 12489186811. The next prime is 12489186817. The reversal of 12489186812 is 21868198421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489186811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45518 + ... + 164469.

It is an arithmetic number, because the mean of its divisors is an integer number (1821470910).

Almost surely, 2^12489186812 is an apocalyptic number.

It is an amenable number.

12489186812 is a deficient number, since it is larger than the sum of its proper divisors (9368464108).

12489186812 is a wasteful number, since it uses less digits than its factorization.

12489186812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224860 (or 224858 counting only the distinct ones).

The product of its digits is 442368, while the sum is 50.

The spelling of 12489186812 in words is "twelve billion, four hundred eighty-nine million, one hundred eighty-six thousand, eight hundred twelve".