11822397786 has 12 divisors (see below), whose sum is σ = 25615195242. Its totient is φ = 3940799256.

The previous prime is 11822397779. The next prime is 11822397787. The reversal of 11822397786 is 68779322811.

It is a happy number.

11822397786 is a `hidden beast` number, since 1 + 182 + 2 + 397 + 78 + 6 = 666.

11822397786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11327557761 + 494840025 = 106431^2 + 22245^2 .

It is not an unprimeable number, because it can be changed into a prime (11822397787) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 328399921 + ... + 328399956.

Almost surely, 2^11822397786 is an apocalyptic number.

11822397786 is an abundant number, since it is smaller than the sum of its proper divisors (13792797456).

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

11822397786 is a wasteful number, since it uses less digits than its factorization.

11822397786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656799885 (or 656799882 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 11822397786 in words is "eleven billion, eight hundred twenty-two million, three hundred ninety-seven thousand, seven hundred eighty-six".