16012208209 has 2 divisors, whose sum is σ = 16012208210. Its totient is φ = 16012208208.

The previous prime is 16012208197. The next prime is 16012208213. The reversal of 16012208209 is 90280221061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12683264400 + 3328943809 = 112620^2 + 57697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16012208209 is a prime.

It is not a weakly prime, because it can be changed into another prime (16012208239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8006104104 + 8006104105.

It is an arithmetic number, because the mean of its divisors is an integer number (8006104105).

Almost surely, 2^16012208209 is an apocalyptic number.

It is an amenable number.

16012208209 is a deficient number, since it is larger than the sum of its proper divisors (1).

16012208209 is an equidigital number, since it uses as much as digits as its factorization.

16012208209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 16012208209 in words is "sixteen billion, twelve million, two hundred eight thousand, two hundred nine".