11821136843191 has 8 divisors (see below), whose sum is σ = 12730483239264. Its totient is φ = 10911794472480.

The previous prime is 11821136843183. The next prime is 11821136843203. The reversal of 11821136843191 is 19134863112811.

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 11821136843191 - 2³ = 11821136843183 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 (11821136843111) 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, 8238345 + ... + 9566221.

It is an arithmetic number, because the mean of its divisors is an integer number (1591310404908).

Almost surely, 2^{11821136843191} is an apocalyptic number.

11821136843191 is a deficient number, since it is larger than the sum of its proper divisors (909346396073).

11821136843191 is a wasteful number, since it uses less digits than its factorization.

11821136843191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012681.

The product of its digits is 248832, while the sum is 49.

The spelling of 11821136843191 in words is "eleven trillion, eight hundred twenty-one billion, one hundred thirty-six million, eight hundred forty-three thousand, one hundred ninety-one".