111663606114165 has 64 divisors (see below), whose sum is σ = 204552469094400. Its totient is φ = 50954361513984.

The previous prime is 111663606114161. The next prime is 111663606114241. The reversal of 111663606114165 is 561411606366111.

It is a happy number.

It is not a de Polignac number, because 111663606114165 - 2² = 111663606114161 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111663606114161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 278569156 + ... + 278969714.

It is an arithmetic number, because the mean of its divisors is an integer number (3196132329600).

Almost surely, 2^{111663606114165} is an apocalyptic number.

111663606114165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111663606114165 is a deficient number, since it is larger than the sum of its proper divisors (92888862980235).

111663606114165 is a wasteful number, since it uses less digits than its factorization.

111663606114165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405346.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 111663606114165 in words is "one hundred eleven trillion, six hundred sixty-three billion, six hundred six million, one hundred fourteen thousand, one hundred sixty-five".