206315734678 has 16 divisors (see below), whose sum is σ = 313854656256. Its totient is φ = 101697722280.

The previous prime is 206315734531. The next prime is 206315734697. The reversal of 206315734678 is 876437513602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2348575 + ... + 2434837.

It is an arithmetic number, because the mean of its divisors is an integer number (19615916016).

Almost surely, 2^206315734678 is an apocalyptic number.

206315734678 is a deficient number, since it is larger than the sum of its proper divisors (107538921578).

206315734678 is a wasteful number, since it uses less digits than its factorization.

206315734678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103179.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 206315734678 in words is "two hundred six billion, three hundred fifteen million, seven hundred thirty-four thousand, six hundred seventy-eight".