209614242368864 has 24 divisors (see below), whose sum is σ = 414200836875168. Its totient is φ = 104420379035520.

The previous prime is 209614242368857. The next prime is 209614242368903. The reversal of 209614242368864 is 468863242416902.

It is a self number, because there is not a number n which added to its sum of digits gives 209614242368864.

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, 12085683347 + ... + 12085700690.

It is an arithmetic number, because the mean of its divisors is an integer number (17258368203132).

Almost surely, 2^{209614242368864} is an apocalyptic number.

It is an amenable number.

209614242368864 is a deficient number, since it is larger than the sum of its proper divisors (204586594506304).

209614242368864 is a wasteful number, since it uses less digits than its factorization.

209614242368864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24171384318 (or 24171384310 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 65.

The spelling of 209614242368864 in words is "two hundred nine trillion, six hundred fourteen billion, two hundred forty-two million, three hundred sixty-eight thousand, eight hundred sixty-four".