68856889086 has 48 divisors (see below), whose sum is σ = 160694202240. Its totient is φ = 21238595280.

The previous prime is 68856889061. The next prime is 68856889099. The reversal of 68856889086 is 68098865886.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2326410 + ... + 2355821.

It is an arithmetic number, because the mean of its divisors is an integer number (3347795880).

Almost surely, 2^68856889086 is an apocalyptic number.

68856889086 is an abundant number, since it is smaller than the sum of its proper divisors (91837313154).

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

68856889086 is a wasteful number, since it uses less digits than its factorization.

68856889086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682301 (or 4682298 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 72.

The spelling of 68856889086 in words is "sixty-eight billion, eight hundred fifty-six million, eight hundred eighty-nine thousand, eighty-six".