11681781822 has 32 divisors (see below), whose sum is σ = 25966855200. Its totient is φ = 3892826304.

The previous prime is 11681781773. The next prime is 11681781847. The reversal of 11681781822 is 22818718611.

11681781822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174828 + ... + 232224.

It is an arithmetic number, because the mean of its divisors is an integer number (811464225).

Almost surely, 2^11681781822 is an apocalyptic number.

11681781822 is an abundant number, since it is smaller than the sum of its proper divisors (14285073378).

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

11681781822 is a wasteful number, since it uses less digits than its factorization.

11681781822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61177 (or 61171 counting only the distinct ones).

The product of its digits is 86016, while the sum is 45.

The spelling of 11681781822 in words is "eleven billion, six hundred eighty-one million, seven hundred eighty-one thousand, eight hundred twenty-two".