68208440440616 has 48 divisors (see below), whose sum is σ = 148785411843540. Its totient is φ = 29229349228800.

The previous prime is 68208440440601. The next prime is 68208440440633. The reversal of 68208440440616 is 61604404480286.

68208440440616 is digitally balanced in base 2, 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 2 ways, for example, as 67802938936516 + 405501504100 = 8234254^2 + 636790^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4407845 + ... + 12483828.

Almost surely, 2^{68208440440616} is an apocalyptic number.

It is an amenable number.

68208440440616 is an abundant number, since it is smaller than the sum of its proper divisors (80576971402924).

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

68208440440616 is a wasteful number, since it uses less digits than its factorization.

68208440440616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16901994 (or 16901983 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 53.

The spelling of 68208440440616 in words is "sixty-eight trillion, two hundred eight billion, four hundred forty million, four hundred forty thousand, six hundred sixteen".