11665556561112 has 16 divisors (see below), whose sum is σ = 29163891402840. Its totient is φ = 3888518853696.

The previous prime is 11665556561093. The next prime is 11665556561149. The reversal of 11665556561112 is 21116565556611.

11665556561112 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243032428333 + ... + 243032428380.

Almost surely, 2^{11665556561112} is an apocalyptic number.

11665556561112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11665556561112 is an abundant number, since it is smaller than the sum of its proper divisors (17498334841728).

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

11665556561112 is a wasteful number, since it uses less digits than its factorization.

11665556561112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486064856722 (or 486064856718 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 51.

The spelling of 11665556561112 in words is "eleven trillion, six hundred sixty-five billion, five hundred fifty-six million, five hundred sixty-one thousand, one hundred twelve".