68343866416321 has 8 divisors (see below), whose sum is σ = 71989487949600. Its totient is φ = 64703102476320.

The previous prime is 68343866416303. The next prime is 68343866416429. The reversal of 68343866416321 is 12361466834386.

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

It is a cyclic number.

It is not a de Polignac number, because 68343866416321 - 2²⁹ = 68343329545409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68343866416321.

It is not an unprimeable number, because it can be changed into a prime (68343866411321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214369431 + ... + 1214425708.

It is an arithmetic number, because the mean of its divisors is an integer number (8998685993700).

Almost surely, 2^{68343866416321} is an apocalyptic number.

It is an amenable number.

68343866416321 is a deficient number, since it is larger than the sum of its proper divisors (3645621533279).

68343866416321 is a wasteful number, since it uses less digits than its factorization.

68343866416321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428796639.

The product of its digits is 71663616, while the sum is 61.

The spelling of 68343866416321 in words is "sixty-eight trillion, three hundred forty-three billion, eight hundred sixty-six million, four hundred sixteen thousand, three hundred twenty-one".