68206689885 has 8 divisors (see below), whose sum is σ = 109130703840. Its totient is φ = 36376901264.

The previous prime is 68206689853. The next prime is 68206690009. The reversal of 68206689885 is 58898660286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68206689885 - 2⁵ = 68206689853 is a prime.

It is a super-2 number, since 2×68206689885² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273556315 + ... + 2273556344.

It is an arithmetic number, because the mean of its divisors is an integer number (13641337980).

Almost surely, 2^68206689885 is an apocalyptic number.

It is an amenable number.

68206689885 is a deficient number, since it is larger than the sum of its proper divisors (40924013955).

68206689885 is a wasteful number, since it uses less digits than its factorization.

68206689885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547112667.

The product of its (nonzero) digits is 79626240, while the sum is 66.

The spelling of 68206689885 in words is "sixty-eight billion, two hundred six million, six hundred eighty-nine thousand, eight hundred eighty-five".