68256507806 has 16 divisors (see below), whose sum is σ = 103568699520. Its totient is φ = 33733856640.

The previous prime is 68256507799. The next prime is 68256507829. The reversal of 68256507806 is 60870565286.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503186 + ... + 624266.

It is an arithmetic number, because the mean of its divisors is an integer number (6473043720).

Almost surely, 2^68256507806 is an apocalyptic number.

68256507806 is a deficient number, since it is larger than the sum of its proper divisors (35312191714).

68256507806 is a wasteful number, since it uses less digits than its factorization.

68256507806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124339.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 68256507806 in words is "sixty-eight billion, two hundred fifty-six million, five hundred seven thousand, eight hundred six".