68838683887 has 16 divisors (see below), whose sum is σ = 69883084800. Its totient is φ = 67803432480.

The previous prime is 68838683869. The next prime is 68838683891. The reversal of 68838683887 is 78838683886.

It is a cyclic number.

It is not a de Polignac number, because 68838683887 - 2⁷ = 68838683759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68838683867) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16115562 + ... + 16119832.

It is an arithmetic number, because the mean of its divisors is an integer number (4367692800).

Almost surely, 2^68838683887 is an apocalyptic number.

68838683887 is a deficient number, since it is larger than the sum of its proper divisors (1044400913).

68838683887 is a wasteful number, since it uses less digits than its factorization.

68838683887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286.

The product of its digits is 594542592, while the sum is 73.

Subtracting 68838683887 from its reverse (78838683886), we obtain a palindrome (9999999999).

The spelling of 68838683887 in words is "sixty-eight billion, eight hundred thirty-eight million, six hundred eighty-three thousand, eight hundred eighty-seven".