111665425065 has 16 divisors (see below), whose sum is σ = 188068084800. Its totient is φ = 56420425152.

The previous prime is 111665425051. The next prime is 111665425087. The reversal of 111665425065 is 560524566111.

It is not a de Polignac number, because 111665425065 - 2⁴ = 111665425049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195903970 + ... + 195904539.

It is an arithmetic number, because the mean of its divisors is an integer number (11754255300).

Almost surely, 2^111665425065 is an apocalyptic number.

111665425065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111665425065 is a deficient number, since it is larger than the sum of its proper divisors (76402659735).

111665425065 is a wasteful number, since it uses less digits than its factorization.

111665425065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391808536.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 111665425065 in words is "one hundred eleven billion, six hundred sixty-five million, four hundred twenty-five thousand, sixty-five".