216688207723167 has 8 divisors (see below), whose sum is σ = 288918646853040. Its totient is φ = 144458286871040.

The previous prime is 216688207723153. The next prime is 216688207723177. The reversal of 216688207723167 is 761327702886612.

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 216688207723167 - 2⁶ = 216688207723103 is a prime.

It is a super-2 number, since 2×216688207723167² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216688207723098 and 216688207723107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216688207723177) 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, 128592834 + ... + 130267007.

It is an arithmetic number, because the mean of its divisors is an integer number (36114830856630).

Almost surely, 2^{216688207723167} is an apocalyptic number.

216688207723167 is a deficient number, since it is larger than the sum of its proper divisors (72230439129873).

216688207723167 is a wasteful number, since it uses less digits than its factorization.

216688207723167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259138873.

The product of its (nonzero) digits is 113799168, while the sum is 66.

The spelling of 216688207723167 in words is "two hundred sixteen trillion, six hundred eighty-eight billion, two hundred seven million, seven hundred twenty-three thousand, one hundred sixty-seven".