216006655117 has 16 divisors (see below), whose sum is σ = 236724388992. Its totient is φ = 195470795520.

The previous prime is 216006655087. The next prime is 216006655133. The reversal of 216006655117 is 711556600612.

It is not a de Polignac number, because 216006655117 - 2¹⁹ = 216006130829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216006655117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216006655177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459913 + ... + 2546209.

It is an arithmetic number, because the mean of its divisors is an integer number (14795274312).

Almost surely, 2^216006655117 is an apocalyptic number.

It is an amenable number.

216006655117 is a deficient number, since it is larger than the sum of its proper divisors (20717733875).

216006655117 is a wasteful number, since it uses less digits than its factorization.

216006655117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87348.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 216006655117 in words is "two hundred sixteen billion, six million, six hundred fifty-five thousand, one hundred seventeen".