12859711812191 has 4 divisors (see below), whose sum is σ = 12865522800312. Its totient is φ = 12853900824072.

The previous prime is 12859711812169. The next prime is 12859711812193. The reversal of 12859711812191 is 19121811795821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12859711812191 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 (12859711812193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905490741 + ... + 2905495166.

It is an arithmetic number, because the mean of its divisors is an integer number (3216380700078).

Almost surely, 2^{12859711812191} is an apocalyptic number.

12859711812191 is a deficient number, since it is larger than the sum of its proper divisors (5810988121).

12859711812191 is an equidigital number, since it uses as much as digits as its factorization.

12859711812191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810988120.

The product of its digits is 725760, while the sum is 56.

The spelling of 12859711812191 in words is "twelve trillion, eight hundred fifty-nine billion, seven hundred eleven million, eight hundred twelve thousand, one hundred ninety-one".