11881118818 has 16 divisors (see below), whose sum is σ = 17873568864. Its totient is φ = 5923284640.

The previous prime is 11881118783. The next prime is 11881118819. The reversal of 11881118818 is 81881118811.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11881118819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278846 + ... + 1288102.

It is an arithmetic number, because the mean of its divisors is an integer number (1117098054).

Almost surely, 2^11881118818 is an apocalyptic number.

11881118818 is a deficient number, since it is larger than the sum of its proper divisors (5992450046).

11881118818 is a wasteful number, since it uses less digits than its factorization.

11881118818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11057.

The product of its digits is 32768, while the sum is 46.

The spelling of 11881118818 in words is "eleven billion, eight hundred eighty-one million, one hundred eighteen thousand, eight hundred eighteen".