12291679387904 has 144 divisors (see below), whose sum is σ = 29440256899200. Its totient is φ = 5010297126912.

The previous prime is 12291679387879. The next prime is 12291679387909. The reversal of 12291679387904 is 40978397619221.

It is not an unprimeable number, because it can be changed into a prime (12291679387909) 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, 1716752 + ... + 5246960.

Almost surely, 2^{12291679387904} is an apocalyptic number.

12291679387904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12291679387904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14720128449600).

12291679387904 is an abundant number, since it is smaller than the sum of its proper divisors (17148577511296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12291679387904 is an equidigital number, since it uses as much as digits as its factorization.

12291679387904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530328 (or 3530314 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 68.

The spelling of 12291679387904 in words is "twelve trillion, two hundred ninety-one billion, six hundred seventy-nine million, three hundred eighty-seven thousand, nine hundred four".