186668686842 has 64 divisors (see below), whose sum is σ = 409561536384. Its totient is φ = 56249303040.

The previous prime is 186668686837. The next prime is 186668686843. The reversal of 186668686842 is 248686866681.

It is not an unprimeable number, because it can be changed into a prime (186668686843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44945838 + ... + 44949990.

It is an arithmetic number, because the mean of its divisors is an integer number (6399399006).

Almost surely, 2^186668686842 is an apocalyptic number.

186668686842 is an abundant number, since it is smaller than the sum of its proper divisors (222892849542).

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

186668686842 is a wasteful number, since it uses less digits than its factorization.

186668686842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7823.

The product of its digits is 254803968, while the sum is 69.

The spelling of 186668686842 in words is "one hundred eighty-six billion, six hundred sixty-eight million, six hundred eighty-six thousand, eight hundred forty-two".