12291837589 has 4 divisors (see below), whose sum is σ = 12308381856. Its totient is φ = 12275293324.

The previous prime is 12291837577. The next prime is 12291837617. The reversal of 12291837589 is 98573819221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12291837589 - 2⁵ = 12291837557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12291837989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8271019 + ... + 8272504.

It is an arithmetic number, because the mean of its divisors is an integer number (3077095464).

Almost surely, 2^12291837589 is an apocalyptic number.

It is an amenable number.

12291837589 is a deficient number, since it is larger than the sum of its proper divisors (16544267).

12291837589 is an equidigital number, since it uses as much as digits as its factorization.

12291837589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16544266.

The product of its digits is 2177280, while the sum is 55.

The spelling of 12291837589 in words is "twelve billion, two hundred ninety-one million, eight hundred thirty-seven thousand, five hundred eighty-nine".