216829480217 has 16 divisors (see below), whose sum is σ = 253048704000. Its totient is φ = 185716883520.

The previous prime is 216829480171. The next prime is 216829480229. The reversal of 216829480217 is 712084928612.

It is not a de Polignac number, because 216829480217 - 2⁸ = 216829479961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216829480277) 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, 234584 + ... + 699062.

It is an arithmetic number, because the mean of its divisors is an integer number (15815544000).

Almost surely, 2^216829480217 is an apocalyptic number.

It is an amenable number.

216829480217 is a deficient number, since it is larger than the sum of its proper divisors (36219223783).

216829480217 is an equidigital number, since it uses as much as digits as its factorization.

216829480217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465861 (or 465847 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 216829480217 in words is "two hundred sixteen billion, eight hundred twenty-nine million, four hundred eighty thousand, two hundred seventeen".