12991046369 has 8 divisors (see below), whose sum is σ = 15492428160. Its totient is φ = 10651044096.

The previous prime is 12991046329. The next prime is 12991046371. The reversal of 12991046369 is 96364019921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12991046369 is a prime.

It is a super-2 number, since 2×12991046369² (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 (12991046309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40344704 + ... + 40345025.

It is an arithmetic number, because the mean of its divisors is an integer number (1936553520).

Almost surely, 2^12991046369 is an apocalyptic number.

It is an amenable number.

12991046369 is a deficient number, since it is larger than the sum of its proper divisors (2501381791).

12991046369 is an equidigital number, since it uses as much as digits as its factorization.

12991046369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80689759.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 12991046369 in words is "twelve billion, nine hundred ninety-one million, forty-six thousand, three hundred sixty-nine".