12891941448279 has 8 divisors (see below), whose sum is σ = 17189276213232. Its totient is φ = 8594617157760.

The previous prime is 12891941448209. The next prime is 12891941448317. The reversal of 12891941448279 is 97284414919821.

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

It is not a de Polignac number, because 12891941448279 - 2¹² = 12891941444183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891941448209) 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, 946749 + ... + 5165289.

It is an arithmetic number, because the mean of its divisors is an integer number (2148659526654).

Almost surely, 2^{12891941448279} is an apocalyptic number.

12891941448279 is a deficient number, since it is larger than the sum of its proper divisors (4297334764953).

12891941448279 is a wasteful number, since it uses less digits than its factorization.

12891941448279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237217.

The product of its digits is 83607552, while the sum is 69.

The spelling of 12891941448279 in words is "twelve trillion, eight hundred ninety-one billion, nine hundred forty-one million, four hundred forty-eight thousand, two hundred seventy-nine".