209916413716 has 12 divisors (see below), whose sum is σ = 369257112532. Its totient is φ = 104414381568.

The previous prime is 209916413701. The next prime is 209916413767. The reversal of 209916413716 is 617314619902.

209916413716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 125880201616 + 84036212100 = 354796^2 + 289890^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 209916413716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135955455 + ... + 135956998.

Almost surely, 2^209916413716 is an apocalyptic number.

It is an amenable number.

209916413716 is a deficient number, since it is larger than the sum of its proper divisors (159340698816).

209916413716 is a wasteful number, since it uses less digits than its factorization.

209916413716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271912650 (or 271912648 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 209916413716 in words is "two hundred nine billion, nine hundred sixteen million, four hundred thirteen thousand, seven hundred sixteen".