206864487018 has 48 divisors (see below), whose sum is σ = 512339458176. Its totient is φ = 59092187040.

The previous prime is 206864487007. The next prime is 206864487107. The reversal of 206864487018 is 810784468602.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469155 + ... + 796137.

It is an arithmetic number, because the mean of its divisors is an integer number (10673738712).

Almost surely, 2^206864487018 is an apocalyptic number.

206864487018 is an abundant number, since it is smaller than the sum of its proper divisors (305474971158).

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

206864487018 is a wasteful number, since it uses less digits than its factorization.

206864487018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332019 (or 332016 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 206864487018 in words is "two hundred six billion, eight hundred sixty-four million, four hundred eighty-seven thousand, eighteen".