111668205078 has 48 divisors (see below), whose sum is σ = 252049870800. Its totient is φ = 35699343360.

The previous prime is 111668205067. The next prime is 111668205169. The reversal of 111668205078 is 870502866111.

111668205078 is a `hidden beast` number, since 1 + 1 + 1 + 66 + 82 + 0 + 507 + 8 = 666.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 1238763 + ... + 1325846.

It is an arithmetic number, because the mean of its divisors is an integer number (5251038975).

Almost surely, 2^111668205078 is an apocalyptic number.

111668205078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111668205078 is an abundant number, since it is smaller than the sum of its proper divisors (140381665722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111668205078 is a wasteful number, since it uses less digits than its factorization.

111668205078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564717 (or 2564714 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 111668205078 in words is "one hundred eleven billion, six hundred sixty-eight million, two hundred five thousand, seventy-eight".