216103855917 has 8 divisors (see below), whose sum is σ = 289973752096. Its totient is φ = 143151598512.

The previous prime is 216103855909. The next prime is 216103855939. The reversal of 216103855917 is 719558301612.

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

It is not a de Polignac number, because 216103855917 - 2³ = 216103855909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216103855817) 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, 229409143 + ... + 229410084.

It is an arithmetic number, because the mean of its divisors is an integer number (36246719012).

Almost surely, 2^216103855917 is an apocalyptic number.

It is an amenable number.

216103855917 is a deficient number, since it is larger than the sum of its proper divisors (73869896179).

216103855917 is a wasteful number, since it uses less digits than its factorization.

216103855917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458819387.

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 216103855917 in words is "two hundred sixteen billion, one hundred three million, eight hundred fifty-five thousand, nine hundred seventeen".