12591255659 has 24 divisors (see below), whose sum is σ = 13198290336. Its totient is φ = 12009312000.

The previous prime is 12591255653. The next prime is 12591255707. The reversal of 12591255659 is 95655219521.

It is not a de Polignac number, because 12591255659 - 2⁴ = 12591255643 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12591255653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27312689 + ... + 27313149.

It is an arithmetic number, because the mean of its divisors is an integer number (549928764).

Almost surely, 2^12591255659 is an apocalyptic number.

12591255659 is a deficient number, since it is larger than the sum of its proper divisors (607034677).

12591255659 is an equidigital number, since it uses as much as digits as its factorization.

12591255659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 850 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 50.

The spelling of 12591255659 in words is "twelve billion, five hundred ninety-one million, two hundred fifty-five thousand, six hundred fifty-nine".