11327843821 has 4 divisors (see below), whose sum is σ = 12946107232. Its totient is φ = 9709580412.

The previous prime is 11327843803. The next prime is 11327843837. The reversal of 11327843821 is 12834872311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11327843821 - 2⁵ = 11327843789 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 (11327843851) 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, 809131695 + ... + 809131708.

It is an arithmetic number, because the mean of its divisors is an integer number (3236526808).

Almost surely, 2^11327843821 is an apocalyptic number.

It is an amenable number.

11327843821 is a deficient number, since it is larger than the sum of its proper divisors (1618263411).

11327843821 is an equidigital number, since it uses as much as digits as its factorization.

11327843821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618263410.

The product of its digits is 64512, while the sum is 40.

The spelling of 11327843821 in words is "eleven billion, three hundred twenty-seven million, eight hundred forty-three thousand, eight hundred twenty-one".