12491037559 has 32 divisors (see below), whose sum is σ = 17055521280. Its totient is φ = 8832240000.

The previous prime is 12491037523. The next prime is 12491037569. The reversal of 12491037559 is 95573019421.

It is a cyclic number.

It is not a de Polignac number, because 12491037559 - 2¹³ = 12491029367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12491037569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46692 + ... + 164809.

It is an arithmetic number, because the mean of its divisors is an integer number (532985040).

Almost surely, 2^12491037559 is an apocalyptic number.

12491037559 is a deficient number, since it is larger than the sum of its proper divisors (4564483721).

12491037559 is a wasteful number, since it uses less digits than its factorization.

12491037559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211591.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 12491037559 in words is "twelve billion, four hundred ninety-one million, thirty-seven thousand, five hundred fifty-nine".