118878878866 has 32 divisors (see below), whose sum is σ = 196273336896. Its totient is φ = 53553384000.

The previous prime is 118878878851. The next prime is 118878878869. The reversal of 118878878866 is 668878878811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 118878878792 and 118878878801.

It is not an unprimeable number, because it can be changed into a prime (118878878869) by changing a digit.

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, 1115781 + ... + 1217671.

It is an arithmetic number, because the mean of its divisors is an integer number (6133541778).

Almost surely, 2^118878878866 is an apocalyptic number.

118878878866 is a deficient number, since it is larger than the sum of its proper divisors (77394458030).

118878878866 is a wasteful number, since it uses less digits than its factorization.

118878878866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102378.

The product of its digits is 462422016, while the sum is 76.

Subtracting 118878878866 from its reverse (668878878811), we obtain a palindrome (549999999945).

The spelling of 118878878866 in words is "one hundred eighteen billion, eight hundred seventy-eight million, eight hundred seventy-eight thousand, eight hundred sixty-six".