68159108559 has 32 divisors (see below), whose sum is σ = 97231651776. Its totient is φ = 42319411200.

The previous prime is 68159108539. The next prime is 68159108573. The reversal of 68159108559 is 95580195186.

It is not a de Polignac number, because 68159108559 - 2²¹ = 68157011407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68159108499 and 68159108508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68159108539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15641409 + ... + 15645765.

It is an arithmetic number, because the mean of its divisors is an integer number (3038489118).

Almost surely, 2^68159108559 is an apocalyptic number.

68159108559 is a deficient number, since it is larger than the sum of its proper divisors (29072543217).

68159108559 is a wasteful number, since it uses less digits than its factorization.

68159108559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7515.

The product of its (nonzero) digits is 3888000, while the sum is 57.

The spelling of 68159108559 in words is "sixty-eight billion, one hundred fifty-nine million, one hundred eight thousand, five hundred fifty-nine".