209709344714 has 16 divisors (see below), whose sum is σ = 315589746888. Its totient is φ = 104512945152.

The previous prime is 209709344683. The next prime is 209709344737. The reversal of 209709344714 is 417443907902.

It can be written as a sum of positive squares in 4 ways, for example, as 162704936689 + 47004408025 = 403367^2 + 216805^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353682 + ... + 2441154.

Almost surely, 2^209709344714 is an apocalyptic number.

209709344714 is a deficient number, since it is larger than the sum of its proper divisors (105880402174).

209709344714 is a wasteful number, since it uses less digits than its factorization.

209709344714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91369.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 209709344714 in words is "two hundred nine billion, seven hundred nine million, three hundred forty-four thousand, seven hundred fourteen".