68339157707 has 4 divisors (see below), whose sum is σ = 68454401400. Its totient is φ = 68223914016.

The previous prime is 68339157697. The next prime is 68339157793. The reversal of 68339157707 is 70775193386.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68339157707 is a prime.

It is a super-2 number, since 2×68339157707² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68339157407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57620957 + ... + 57622142.

It is an arithmetic number, because the mean of its divisors is an integer number (17113600350).

Almost surely, 2^68339157707 is an apocalyptic number.

68339157707 is a deficient number, since it is larger than the sum of its proper divisors (115243693).

68339157707 is a wasteful number, since it uses less digits than its factorization.

68339157707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115243692.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 68339157707 in words is "sixty-eight billion, three hundred thirty-nine million, one hundred fifty-seven thousand, seven hundred seven".