12489216579 has 36 divisors (see below), whose sum is σ = 21762535704. Its totient is φ = 7136688384.

The previous prime is 12489216569. The next prime is 12489216613. The reversal of 12489216579 is 97561298421.

It is a happy number.

12489216579 is a `hidden beast` number, since 1 + 2 + 48 + 9 + 21 + 6 + 579 = 666.

It is not a de Polignac number, because 12489216579 - 2⁷ = 12489216451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12489216569) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 512542 + ... + 536355.

Almost surely, 2^12489216579 is an apocalyptic number.

12489216579 is a deficient number, since it is larger than the sum of its proper divisors (9273319125).

12489216579 is an equidigital number, since it uses as much as digits as its factorization.

12489216579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048926 (or 1048907 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 12489216579 in words is "twelve billion, four hundred eighty-nine million, two hundred sixteen thousand, five hundred seventy-nine".