12409216659 has 32 divisors (see below), whose sum is σ = 21034391040. Its totient is φ = 7082855136.

The previous prime is 12409216649. The next prime is 12409216669. The reversal of 12409216659 is 95661290421.

It is an interprime number because it is at equal distance from previous prime (12409216649) and next prime (12409216669).

It is not a de Polignac number, because 12409216659 - 2⁷ = 12409216531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12409216649) 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 31 ways as a sum of consecutive naturals, for example, 129709 + ... + 204065.

It is an arithmetic number, because the mean of its divisors is an integer number (657324720).

Almost surely, 2^12409216659 is an apocalyptic number.

12409216659 is a deficient number, since it is larger than the sum of its proper divisors (8625174381).

12409216659 is an equidigital number, since it uses as much as digits as its factorization.

12409216659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75256 (or 75250 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 12409216659 in words is "twelve billion, four hundred nine million, two hundred sixteen thousand, six hundred fifty-nine".