68609880321789 has 8 divisors (see below), whose sum is σ = 91487127967552. Its totient is φ = 45736276445280.

The previous prime is 68609880321769. The next prime is 68609880321797. The reversal of 68609880321789 is 98712308890686.

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

It is not a de Polignac number, because 68609880321789 - 2¹⁷ = 68609880190717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68609880321789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68609880321769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910898377 + ... + 910973694.

It is an arithmetic number, because the mean of its divisors is an integer number (11435890995944).

Almost surely, 2^{68609880321789} is an apocalyptic number.

It is an amenable number.

68609880321789 is a deficient number, since it is larger than the sum of its proper divisors (22877247645763).

68609880321789 is a wasteful number, since it uses less digits than its factorization.

68609880321789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821884627.

The product of its (nonzero) digits is 501645312, while the sum is 75.

The spelling of 68609880321789 in words is "sixty-eight trillion, six hundred nine billion, eight hundred eighty million, three hundred twenty-one thousand, seven hundred eighty-nine".