68438238335 has 4 divisors (see below), whose sum is σ = 82125886008. Its totient is φ = 54750590664.

The previous prime is 68438238307. The next prime is 68438238361. The reversal of 68438238335 is 53383283486.

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 68438238335 - 2¹⁰ = 68438237311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6843823829 + ... + 6843823838.

It is an arithmetic number, because the mean of its divisors is an integer number (20531471502).

Almost surely, 2^68438238335 is an apocalyptic number.

68438238335 is a deficient number, since it is larger than the sum of its proper divisors (13687647673).

68438238335 is a wasteful number, since it uses less digits than its factorization.

68438238335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13687647672.

The product of its digits is 9953280, while the sum is 53.

The spelling of 68438238335 in words is "sixty-eight billion, four hundred thirty-eight million, two hundred thirty-eight thousand, three hundred thirty-five".