12391591219 has 16 divisors (see below), whose sum is σ = 14929698816. Its totient is φ = 10060034400.

The previous prime is 12391591117. The next prime is 12391591229. The reversal of 12391591219 is 91219519321.

12391591219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12391591219 is a prime.

It is a super-2 number, since 2×12391591219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12391591229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597292 + ... + 617689.

It is an arithmetic number, because the mean of its divisors is an integer number (933106176).

Almost surely, 2^12391591219 is an apocalyptic number.

12391591219 is a deficient number, since it is larger than the sum of its proper divisors (2538107597).

12391591219 is a wasteful number, since it uses less digits than its factorization.

12391591219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215066.

The product of its digits is 43740, while the sum is 43.

The spelling of 12391591219 in words is "twelve billion, three hundred ninety-one million, five hundred ninety-one thousand, two hundred nineteen".