216972848663 has 4 divisors (see below), whose sum is σ = 217032607968. Its totient is φ = 216913089360.

The previous prime is 216972848641. The next prime is 216972848669. The reversal of 216972848663 is 366848279612.

216972848663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216972848663 - 2¹⁰ = 216972847639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216972848596 and 216972848605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216972848669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29874206 + ... + 29881467.

It is an arithmetic number, because the mean of its divisors is an integer number (54258151992).

Almost surely, 2^216972848663 is an apocalyptic number.

216972848663 is a deficient number, since it is larger than the sum of its proper divisors (59759305).

216972848663 is an equidigital number, since it uses as much as digits as its factorization.

216972848663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59759304.

The product of its digits is 41803776, while the sum is 62.

The spelling of 216972848663 in words is "two hundred sixteen billion, nine hundred seventy-two million, eight hundred forty-eight thousand, six hundred sixty-three".