111690632159 has 4 divisors (see below), whose sum is σ = 112105839240. Its totient is φ = 111275425080.

The previous prime is 111690632149. The next prime is 111690632167. The reversal of 111690632159 is 951236096111.

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 111690632159 - 2³² = 107395664863 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 (111690632129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207603137 + ... + 207603674.

It is an arithmetic number, because the mean of its divisors is an integer number (28026459810).

Almost surely, 2^111690632159 is an apocalyptic number.

111690632159 is a deficient number, since it is larger than the sum of its proper divisors (415207081).

111690632159 is an equidigital number, since it uses as much as digits as its factorization.

111690632159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415207080.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 111690632159 in words is "one hundred eleven billion, six hundred ninety million, six hundred thirty-two thousand, one hundred fifty-nine".