111665254666 has 8 divisors (see below), whose sum is σ = 191426150880. Its totient is φ = 47856537708.

The previous prime is 111665254663. The next prime is 111665254669. The reversal of 111665254666 is 666452566111.

It is an interprime number because it is at equal distance from previous prime (111665254663) and next prime (111665254669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111665254663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988044796 + ... + 3988044823.

It is an arithmetic number, because the mean of its divisors is an integer number (23928268860).

Almost surely, 2^111665254666 is an apocalyptic number.

111665254666 is a deficient number, since it is larger than the sum of its proper divisors (79760896214).

111665254666 is an equidigital number, since it uses as much as digits as its factorization.

111665254666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976089628.

The product of its digits is 1555200, while the sum is 49.

The spelling of 111665254666 in words is "one hundred eleven billion, six hundred sixty-five million, two hundred fifty-four thousand, six hundred sixty-six".