111566051656 has 16 divisors (see below), whose sum is σ = 210395519100. Its totient is φ = 55460579904.

The previous prime is 111566051617. The next prime is 111566051689. The reversal of 111566051656 is 656150665111.

It can be written as a sum of positive squares in 2 ways, for example, as 81173708100 + 30392343556 = 284910^2 + 174334^2 .

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, 40304271 + ... + 40307038.

Almost surely, 2^111566051656 is an apocalyptic number.

It is an amenable number.

111566051656 is a deficient number, since it is larger than the sum of its proper divisors (98829467444).

111566051656 is a wasteful number, since it uses less digits than its factorization.

111566051656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80611488 (or 80611484 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 111566051656 in words is "one hundred eleven billion, five hundred sixty-six million, fifty-one thousand, six hundred fifty-six".