12591528641 has 16 divisors (see below), whose sum is σ = 13270431744. Its totient is φ = 11923828224.

The previous prime is 12591528623. The next prime is 12591528659. The reversal of 12591528641 is 14682519521.

It is an interprime number because it is at equal distance from previous prime (12591528623) and next prime (12591528659).

It is a cyclic number.

It is not a de Polignac number, because 12591528641 - 2¹⁴ = 12591512257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12591528592 and 12591528601.

It is not an unprimeable number, because it can be changed into a prime (12591528611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2822885 + ... + 2827341.

It is an arithmetic number, because the mean of its divisors is an integer number (829401984).

Almost surely, 2^12591528641 is an apocalyptic number.

It is an amenable number.

12591528641 is a deficient number, since it is larger than the sum of its proper divisors (678903103).

12591528641 is a wasteful number, since it uses less digits than its factorization.

12591528641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5680.

The product of its digits is 172800, while the sum is 44.

The spelling of 12591528641 in words is "twelve billion, five hundred ninety-one million, five hundred twenty-eight thousand, six hundred forty-one".