11820786484 has 12 divisors (see below), whose sum is σ = 22277636164. Its totient is φ = 5455747584.

The previous prime is 11820786361. The next prime is 11820786487. The reversal of 11820786484 is 48468702811.

It can be written as a sum of positive squares in 2 ways, for example, as 1135016100 + 10685770384 = 33690^2 + 103372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11820786487) 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, 113661357 + ... + 113661460.

Almost surely, 2^11820786484 is an apocalyptic number.

It is an amenable number.

11820786484 is a deficient number, since it is larger than the sum of its proper divisors (10456849680).

11820786484 is a wasteful number, since it uses less digits than its factorization.

11820786484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227322834 (or 227322832 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 11820786484 in words is "eleven billion, eight hundred twenty million, seven hundred eighty-six thousand, four hundred eighty-four".