68243220338 has 8 divisors (see below), whose sum is σ = 103420138332. Its totient is φ = 33769840896.

The previous prime is 68243220323. The next prime is 68243220359. The reversal of 68243220338 is 83302234286.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68051591689 + 191628649 = 260867^2 + 13843^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 68243220295 and 68243220304.

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 3 ways as a sum of consecutive naturals, for example, 175884395 + ... + 175884782.

Almost surely, 2^68243220338 is an apocalyptic number.

68243220338 is a deficient number, since it is larger than the sum of its proper divisors (35176917994).

68243220338 is a wasteful number, since it uses less digits than its factorization.

68243220338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351769276.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 68243220338 in words is "sixty-eight billion, two hundred forty-three million, two hundred twenty thousand, three hundred thirty-eight".