11813640822 has 24 divisors (see below), whose sum is σ = 25822741464. Its totient is φ = 3903031104.

The previous prime is 11813640791. The next prime is 11813640863. The reversal of 11813640822 is 22804631811.

11813640822 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 3 + 640 + 8 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2902008 + ... + 2906075.

It is an arithmetic number, because the mean of its divisors is an integer number (1075947561).

Almost surely, 2^11813640822 is an apocalyptic number.

11813640822 is an abundant number, since it is smaller than the sum of its proper divisors (14009100642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11813640822 is a wasteful number, since it uses less digits than its factorization.

11813640822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808204 (or 5808201 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 11813640822 in words is "eleven billion, eight hundred thirteen million, six hundred forty thousand, eight hundred twenty-two".