68243539814 has 4 divisors (see below), whose sum is σ = 102365309724. Its totient is φ = 34121769906.

The previous prime is 68243539813. The next prime is 68243539831. The reversal of 68243539814 is 41893534286.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68243539811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17060884952 + ... + 17060884955.

It is an arithmetic number, because the mean of its divisors is an integer number (25591327431).

Almost surely, 2^68243539814 is an apocalyptic number.

68243539814 is a deficient number, since it is larger than the sum of its proper divisors (34121769910).

68243539814 is a wasteful number, since it uses less digits than its factorization.

68243539814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34121769909.

The product of its digits is 4976640, while the sum is 53.

The spelling of 68243539814 in words is "sixty-eight billion, two hundred forty-three million, five hundred thirty-nine thousand, eight hundred fourteen".