208657107068 has 24 divisors (see below), whose sum is σ = 368857961472. Its totient is φ = 103270013424.

The previous prime is 208657107017. The next prime is 208657107077. The reversal of 208657107068 is 860701756802.

208657107068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 831521 + ... + 1052967.

It is an arithmetic number, because the mean of its divisors is an integer number (15369081728).

Almost surely, 2^208657107068 is an apocalyptic number.

It is an amenable number.

208657107068 is a deficient number, since it is larger than the sum of its proper divisors (160200854404).

208657107068 is a wasteful number, since it uses less digits than its factorization.

208657107068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223841 (or 223839 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 208657107068 in words is "two hundred eight billion, six hundred fifty-seven million, one hundred seven thousand, sixty-eight".