216216344110551 has 8 divisors (see below), whose sum is σ = 294422255810304. Its totient is φ = 141077330908920.

The previous prime is 216216344110541. The next prime is 216216344110589. The reversal of 216216344110551 is 155011443612612.

It is a happy number.

216216344110551 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 not a de Polignac number, because 216216344110551 - 2¹¹ = 216216344108503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216216344110531) 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, 766724624365 + ... + 766724624646.

It is an arithmetic number, because the mean of its divisors is an integer number (36802781976288).

Almost surely, 2^{216216344110551} is an apocalyptic number.

216216344110551 is a deficient number, since it is larger than the sum of its proper divisors (78205911699753).

216216344110551 is a wasteful number, since it uses less digits than its factorization.

216216344110551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533449249061.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 216216344110551 in words is "two hundred sixteen trillion, two hundred sixteen billion, three hundred forty-four million, one hundred ten thousand, five hundred fifty-one".