111650661000559 has 4 divisors (see below), whose sum is σ = 114247188000616. Its totient is φ = 109054134000504.

The previous prime is 111650661000533. The next prime is 111650661000583. The reversal of 111650661000559 is 955000166056111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111650661000559 - 2⁴¹ = 109451637745007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111650661006559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298263499964 + ... + 1298263500049.

It is an arithmetic number, because the mean of its divisors is an integer number (28561797000154).

Almost surely, 2^{111650661000559} is an apocalyptic number.

111650661000559 is a deficient number, since it is larger than the sum of its proper divisors (2596527000057).

111650661000559 is an equidigital number, since it uses as much as digits as its factorization.

111650661000559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596527000056.

The product of its (nonzero) digits is 243000, while the sum is 46.

The spelling of 111650661000559 in words is "one hundred eleven trillion, six hundred fifty billion, six hundred sixty-one million, five hundred fifty-nine", and thus it is an aban number.