216360273 has 4 divisors (see below), whose sum is σ = 288480368. Its totient is φ = 144240180.

The previous prime is 216360269. The next prime is 216360293. The reversal of 216360273 is 372063612.

216360273 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 216360273 - 2² = 216360269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216360273.

It is not an unprimeable number, because it can be changed into a prime (216360293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36060043 + ... + 36060048.

It is an arithmetic number, because the mean of its divisors is an integer number (72120092).

Almost surely, 2^216360273 is an apocalyptic number.

It is an amenable number.

216360273 is a deficient number, since it is larger than the sum of its proper divisors (72120095).

216360273 is an equidigital number, since it uses as much as digits as its factorization.

216360273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72120094.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 216360273 is about 14709.1900864732. The cubic root of 216360273 is about 600.3334008166. Note that the first 3 decimals are identical.

Subtracting from 216360273 its product of nonzero digits (9072), we obtain a triangular number (216351201 = T₂₀₈₀₁).

The spelling of 216360273 in words is "two hundred sixteen million, three hundred sixty thousand, two hundred seventy-three".