111660663806154 has 24 divisors (see below), whose sum is σ = 241931651768352. Its totient is φ = 37220188419240.

The previous prime is 111660663806077. The next prime is 111660663806161. The reversal of 111660663806154 is 451608366066111.

111660663806154 is a `hidden beast` number, since 1 + 1 + 16 + 6 + 0 + 6 + 6 + 3 + 8 + 0 + 615 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 111660663806154.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26891089 + ... + 30764459.

It is an arithmetic number, because the mean of its divisors is an integer number (10080485490348).

Almost surely, 2^{111660663806154} is an apocalyptic number.

111660663806154 is an abundant number, since it is smaller than the sum of its proper divisors (130270987962198).

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

111660663806154 is a wasteful number, since it uses less digits than its factorization.

111660663806154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474922 (or 5474919 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 111660663806154 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred sixty-three million, eight hundred six thousand, one hundred fifty-four".