16010039209 has 4 divisors (see below), whose sum is σ = 16189927380. Its totient is φ = 15830151040.

The previous prime is 16010039197. The next prime is 16010039257. The reversal of 16010039209 is 90293001061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90293001061 = 107 ⋅843859823.

It can be written as a sum of positive squares in 2 ways, for example, as 7028307225 + 8981731984 = 83835^2 + 94772^2 .

It is a cyclic number.

It is not a de Polignac number, because 16010039209 - 2⁷ = 16010039081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16010039509) 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, 89943952 + ... + 89944129.

It is an arithmetic number, because the mean of its divisors is an integer number (4047481845).

Almost surely, 2^16010039209 is an apocalyptic number.

It is an amenable number.

16010039209 is a deficient number, since it is larger than the sum of its proper divisors (179888171).

16010039209 is an equidigital number, since it uses as much as digits as its factorization.

16010039209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179888170.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 16010039209 in words is "sixteen billion, ten million, thirty-nine thousand, two hundred nine".