68516717107 has 4 divisors (see below), whose sum is σ = 68521477456. Its totient is φ = 68511956760.

The previous prime is 68516717099. The next prime is 68516717117. The reversal of 68516717107 is 70171761586.

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 68516717107 - 2³ = 68516717099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68516717117) 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, 2358519 + ... + 2387392.

It is an arithmetic number, because the mean of its divisors is an integer number (17130369364).

Almost surely, 2^68516717107 is an apocalyptic number.

68516717107 is a deficient number, since it is larger than the sum of its proper divisors (4760349).

68516717107 is a wasteful number, since it uses less digits than its factorization.

68516717107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760348.

The product of its (nonzero) digits is 493920, while the sum is 49.

The spelling of 68516717107 in words is "sixty-eight billion, five hundred sixteen million, seven hundred seventeen thousand, one hundred seven".