68843886562643 has 16 divisors (see below), whose sum is σ = 69594088312320. Its totient is φ = 68095273100544.

The previous prime is 68843886562639. The next prime is 68843886562709. The reversal of 68843886562643 is 34626568834886.

It is a cyclic number.

It is not a de Polignac number, because 68843886562643 - 2² = 68843886562639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68843886564643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140845930 + ... + 1140906272.

It is an arithmetic number, because the mean of its divisors is an integer number (4349630519520).

Almost surely, 2^{68843886562643} is an apocalyptic number.

68843886562643 is a deficient number, since it is larger than the sum of its proper divisors (750201749677).

68843886562643 is a wasteful number, since it uses less digits than its factorization.

68843886562643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73298.

The product of its digits is 7644119040, while the sum is 77.

The spelling of 68843886562643 in words is "sixty-eight trillion, eight hundred forty-three billion, eight hundred eighty-six million, five hundred sixty-two thousand, six hundred forty-three".