68218500186 has 40 divisors (see below), whose sum is σ = 152880799764. Its totient is φ = 22736401920.

The previous prime is 68218500169. The next prime is 68218500241. The reversal of 68218500186 is 68100581286.

68218500186 is a `hidden beast` number, since 68 + 2 + 1 + 8 + 500 + 1 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65981683161 + 2236817025 = 256869^2 + 47295^2 .

It is a Curzon number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1375476 + ... + 1424208.

Almost surely, 2^68218500186 is an apocalyptic number.

68218500186 is an abundant number, since it is smaller than the sum of its proper divisors (84662299578).

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

68218500186 is a wasteful number, since it uses less digits than its factorization.

68218500186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57388 (or 57379 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 68218500186 in words is "sixty-eight billion, two hundred eighteen million, five hundred thousand, one hundred eighty-six".