68689259815338 has 12 divisors (see below), whose sum is σ = 148826729599938. Its totient is φ = 22896419938440.

The previous prime is 68689259815223. The next prime is 68689259815373. The reversal of 68689259815338 is 83351895298686.

It is a happy number.

68689259815338 is a `hidden beast` number, since 6 + 8 + 6 + 8 + 9 + 2 + 598 + 15 + 3 + 3 + 8 = 666.

68689259815338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 56218099524129 + 12471160291209 = 7497873^2 + 3531453^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1908034994853 + ... + 1908034994888.

Almost surely, 2^{68689259815338} is an apocalyptic number.

68689259815338 is an abundant number, since it is smaller than the sum of its proper divisors (80137469784600).

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

68689259815338 is a wasteful number, since it uses less digits than its factorization.

68689259815338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816069989749 (or 3816069989746 counting only the distinct ones).

The product of its digits is 5374771200, while the sum is 81.

The spelling of 68689259815338 in words is "sixty-eight trillion, six hundred eighty-nine billion, two hundred fifty-nine million, eight hundred fifteen thousand, three hundred thirty-eight".