16612067209 has 2 divisors, whose sum is σ = 16612067210. Its totient is φ = 16612067208.

The previous prime is 16612067201. The next prime is 16612067279. The reversal of 16612067209 is 90276021661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16486560000 + 125507209 = 128400^2 + 11203^2 .

It is a cyclic number.

It is not a de Polignac number, because 16612067209 - 2³ = 16612067201 is a prime.

It is not a weakly prime, because it can be changed into another prime (16612067201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8306033604 + 8306033605.

It is an arithmetic number, because the mean of its divisors is an integer number (8306033605).

Almost surely, 2^16612067209 is an apocalyptic number.

It is an amenable number.

16612067209 is a deficient number, since it is larger than the sum of its proper divisors (1).

16612067209 is an equidigital number, since it uses as much as digits as its factorization.

16612067209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 16612067209 in words is "sixteen billion, six hundred twelve million, sixty-seven thousand, two hundred nine".