206618078318 has 4 divisors (see below), whose sum is σ = 309927117480. Its totient is φ = 103309039158.

The previous prime is 206618078311. The next prime is 206618078323. The reversal of 206618078318 is 813870816602.

206618078318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206618078311) by changing a digit.

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 as a sum of consecutive naturals, namely, 51654519578 + ... + 51654519581.

It is an arithmetic number, because the mean of its divisors is an integer number (77481779370).

Almost surely, 2^206618078318 is an apocalyptic number.

206618078318 is a deficient number, since it is larger than the sum of its proper divisors (103309039162).

206618078318 is a wasteful number, since it uses less digits than its factorization.

206618078318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103309039161.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 206618078318 in words is "two hundred six billion, six hundred eighteen million, seventy-eight thousand, three hundred eighteen".