12891273913943 has 8 divisors (see below), whose sum is σ = 12905637640560. Its totient is φ = 12876913589760.

The previous prime is 12891273913939. The next prime is 12891273913949. The reversal of 12891273913943 is 34931937219821.

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 12891273913943 - 2² = 12891273913939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891273913949) 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, 6769271 + ... + 8462007.

It is an arithmetic number, because the mean of its divisors is an integer number (1613204705070).

Almost surely, 2^{12891273913943} is an apocalyptic number.

12891273913943 is a deficient number, since it is larger than the sum of its proper divisors (14363726617).

12891273913943 is a wasteful number, since it uses less digits than its factorization.

12891273913943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701217.

The product of its digits is 17635968, while the sum is 62.

The spelling of 12891273913943 in words is "twelve trillion, eight hundred ninety-one billion, two hundred seventy-three million, nine hundred thirteen thousand, nine hundred forty-three".