68389774867685 has 8 divisors (see below), whose sum is σ = 82694201062176. Its totient is φ = 54294172413520.

The previous prime is 68389774867657. The next prime is 68389774867699. The reversal of 68389774867685 is 58676847798386.

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

It is not a de Polignac number, because 68389774867685 - 2¹² = 68389774863589 is a prime.

It is a super-2 number, since 2×68389774867685² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68389774867594 and 68389774867603.

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, 52205934359 + ... + 52205935668.

It is an arithmetic number, because the mean of its divisors is an integer number (10336775132772).

Almost surely, 2^{68389774867685} is an apocalyptic number.

It is an amenable number.

68389774867685 is a deficient number, since it is larger than the sum of its proper divisors (14304426194491).

68389774867685 is a wasteful number, since it uses less digits than its factorization.

68389774867685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104411870163.

The product of its digits is 163870801920, while the sum is 92.

The spelling of 68389774867685 in words is "sixty-eight trillion, three hundred eighty-nine billion, seven hundred seventy-four million, eight hundred sixty-seven thousand, six hundred eighty-five".