68839764223 has 4 divisors (see below), whose sum is σ = 68879765808. Its totient is φ = 68799762640.

The previous prime is 68839764211. The next prime is 68839764241. The reversal of 68839764223 is 32246793886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68839764223 - 2⁹ = 68839763711 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 (68839764523) by changing a digit.

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, 19998211 + ... + 20001652.

It is an arithmetic number, because the mean of its divisors is an integer number (17219941452).

Almost surely, 2^68839764223 is an apocalyptic number.

68839764223 is a deficient number, since it is larger than the sum of its proper divisors (40001585).

68839764223 is a wasteful number, since it uses less digits than its factorization.

68839764223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40001584.

The product of its digits is 20901888, while the sum is 58.

The spelling of 68839764223 in words is "sixty-eight billion, eight hundred thirty-nine million, seven hundred sixty-four thousand, two hundred twenty-three".