216188285642326 has 8 divisors (see below), whose sum is σ = 324365174693280. Its totient is φ = 108066560744568.

The previous prime is 216188285642317. The next prime is 216188285642411. The reversal of 216188285642326 is 623246582881612.

It is a happy number.

216188285642326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×216188285642326² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13791028501 + ... + 13791044176.

It is an arithmetic number, because the mean of its divisors is an integer number (40545646836660).

Almost surely, 2^{216188285642326} is an apocalyptic number.

216188285642326 is a deficient number, since it is larger than the sum of its proper divisors (108176889050954).

216188285642326 is a wasteful number, since it uses less digits than its factorization.

216188285642326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27582076598.

The product of its digits is 106168320, while the sum is 64.

The spelling of 216188285642326 in words is "two hundred sixteen trillion, one hundred eighty-eight billion, two hundred eighty-five million, six hundred forty-two thousand, three hundred twenty-six".