216409307339 has 8 divisors (see below), whose sum is σ = 221096972880. Its totient is φ = 211771777536.

The previous prime is 216409307329. The next prime is 216409307357. The reversal of 216409307339 is 933703904612.

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

It is a cyclic number.

It is not a de Polignac number, because 216409307339 - 2¹⁶ = 216409241803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216409307293 and 216409307302.

It is not an unprimeable number, because it can be changed into a prime (216409307329) 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, 12525209 + ... + 12542474.

It is an arithmetic number, because the mean of its divisors is an integer number (27637121610).

Almost surely, 2^216409307339 is an apocalyptic number.

216409307339 is a deficient number, since it is larger than the sum of its proper divisors (4687665541).

216409307339 is an equidigital number, since it uses as much as digits as its factorization.

216409307339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25067869.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 216409307339 in words is "two hundred sixteen billion, four hundred nine million, three hundred seven thousand, three hundred thirty-nine".