12344555667891 has 8 divisors (see below), whose sum is σ = 16459427275200. Its totient is φ = 8229693919592.

The previous prime is 12344555667889. The next prime is 12344555668033. The reversal of 12344555667891 is 19876655544321.

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

It is a cyclic number.

It is not a de Polignac number, because 12344555667891 - 2¹ = 12344555667889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12344555647891) 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, 1261696 + ... + 5126498.

It is an arithmetic number, because the mean of its divisors is an integer number (2057428409400).

Almost surely, 2^{12344555667891} is an apocalyptic number.

12344555667891 is a deficient number, since it is larger than the sum of its proper divisors (4114871607309).

12344555667891 is a wasteful number, since it uses less digits than its factorization.

12344555667891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929505.

The product of its digits is 217728000, while the sum is 66.

The spelling of 12344555667891 in words is "twelve trillion, three hundred forty-four billion, five hundred fifty-five million, six hundred sixty-seven thousand, eight hundred ninety-one".