11881118812 has 24 divisors (see below), whose sum is σ = 20970290880. Its totient is φ = 5889773760.

The previous prime is 11881118783. The next prime is 11881118819. The reversal of 11881118812 is 21881118811.

11881118812 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 not an unprimeable number, because it can be changed into a prime (11881118819) 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 7 ways as a sum of consecutive naturals, for example, 268989 + ... + 310027.

It is an arithmetic number, because the mean of its divisors is an integer number (873762120).

Almost surely, 2^11881118812 is an apocalyptic number.

It is an amenable number.

11881118812 is a deficient number, since it is larger than the sum of its proper divisors (9089172068).

11881118812 is a wasteful number, since it uses less digits than its factorization.

11881118812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41661 (or 41659 counting only the distinct ones).

The product of its digits is 8192, while the sum is 40.

Subtracting 11881118812 from its reverse (21881118811), we obtain a palindrome (9999999999).

The spelling of 11881118812 in words is "eleven billion, eight hundred eighty-one million, one hundred eighteen thousand, eight hundred twelve".