12118991066 has 16 divisors (see below), whose sum is σ = 22373522304. Its totient is φ = 4794326064.

The previous prime is 12118991039. The next prime is 12118991081. The reversal of 12118991066 is 66019981121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33293750 + ... + 33294113.

It is an arithmetic number, because the mean of its divisors is an integer number (1398345144).

Almost surely, 2^12118991066 is an apocalyptic number.

12118991066 is a deficient number, since it is larger than the sum of its proper divisors (10254531238).

12118991066 is a wasteful number, since it uses less digits than its factorization.

12118991066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66587885.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 12118991066 in words is "twelve billion, one hundred eighteen million, nine hundred ninety-one thousand, sixty-six".