68439853328 has 160 divisors (see below), whose sum is σ = 169535815680. Its totient is φ = 25988014080.

The previous prime is 68439853319. The next prime is 68439853333. The reversal of 68439853328 is 82335893486.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30566033 + ... + 30568271.

It is an arithmetic number, because the mean of its divisors is an integer number (1059598848).

Almost surely, 2^68439853328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68439853328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84767907840).

68439853328 is an abundant number, since it is smaller than the sum of its proper divisors (101095962352).

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

68439853328 is a wasteful number, since it uses less digits than its factorization.

68439853328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2879 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 59.

The spelling of 68439853328 in words is "sixty-eight billion, four hundred thirty-nine million, eight hundred fifty-three thousand, three hundred twenty-eight".