216716512117 has 8 divisors (see below), whose sum is σ = 247678905600. Its totient is φ = 185754841584.

The previous prime is 216716512109. The next prime is 216716512151. The reversal of 216716512117 is 711215617612.

It is a happy number.

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 216716512117 - 2³ = 216716512109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216716512117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216716510117) 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, 865059 + ... + 1087087.

It is an arithmetic number, because the mean of its divisors is an integer number (30959863200).

Almost surely, 2^216716512117 is an apocalyptic number.

It is an amenable number.

216716512117 is a deficient number, since it is larger than the sum of its proper divisors (30962393483).

216716512117 is a wasteful number, since it uses less digits than its factorization.

216716512117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361475.

The product of its digits is 35280, while the sum is 40.

The spelling of 216716512117 in words is "two hundred sixteen billion, seven hundred sixteen million, five hundred twelve thousand, one hundred seventeen".