68386882853221 has 8 divisors (see below), whose sum is σ = 70745330352600. Its totient is φ = 66028453962240.

The previous prime is 68386882853213. The next prime is 68386882853239. The reversal of 68386882853221 is 12235828868386.

It can be written as a sum of positive squares in 4 ways, for example, as 531712222596 + 67855170630625 = 729186^2 + 8237425^2 .

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 68386882853221 - 2³ = 68386882853213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68386882853921) 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, 3040365 + ... + 12083773.

It is an arithmetic number, because the mean of its divisors is an integer number (8843166294075).

Almost surely, 2^{68386882853221} is an apocalyptic number.

It is an amenable number.

68386882853221 is a deficient number, since it is larger than the sum of its proper divisors (2358447499379).

68386882853221 is a wasteful number, since it uses less digits than its factorization.

68386882853221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304199.

The product of its digits is 424673280, while the sum is 70.

The spelling of 68386882853221 in words is "sixty-eight trillion, three hundred eighty-six billion, eight hundred eighty-two million, eight hundred fifty-three thousand, two hundred twenty-one".