68424440208 has 20 divisors (see below), whose sum is σ = 176763137328. Its totient is φ = 22808146720.

The previous prime is 68424440197. The next prime is 68424440221. The reversal of 68424440208 is 80204442486.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68424440208.

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 3 ways as a sum of consecutive naturals, for example, 712754538 + ... + 712754633.

Almost surely, 2^68424440208 is an apocalyptic number.

It is an amenable number.

68424440208 is an abundant number, since it is smaller than the sum of its proper divisors (108338697120).

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

68424440208 is a wasteful number, since it uses less digits than its factorization.

68424440208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425509182 (or 1425509176 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 42.

The spelling of 68424440208 in words is "sixty-eight billion, four hundred twenty-four million, four hundred forty thousand, two hundred eight".