68516135117 has 8 divisors (see below), whose sum is σ = 71201011200. Its totient is φ = 65860926480.

The previous prime is 68516135059. The next prime is 68516135119. The reversal of 68516135117 is 71153161586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68516135117 - 2⁶ = 68516135053 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 (68516135119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7412153 + ... + 7421390.

It is an arithmetic number, because the mean of its divisors is an integer number (8900126400).

Almost surely, 2^68516135117 is an apocalyptic number.

It is an amenable number.

68516135117 is a deficient number, since it is larger than the sum of its proper divisors (2684876083).

68516135117 is a wasteful number, since it uses less digits than its factorization.

68516135117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14833723.

The product of its digits is 151200, while the sum is 44.

The spelling of 68516135117 in words is "sixty-eight billion, five hundred sixteen million, one hundred thirty-five thousand, one hundred seventeen".