216384969911186 has 16 divisors (see below), whose sum is σ = 327758676716544. Its totient is φ = 107135335453104.

The previous prime is 216384969911137. The next prime is 216384969911189. The reversal of 216384969911186 is 681119969483612.

It is not an unprimeable number, because it can be changed into a prime (216384969911189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814312025 + ... + 814577708.

It is an arithmetic number, because the mean of its divisors is an integer number (20484917294784).

Almost surely, 2^{216384969911186} is an apocalyptic number.

216384969911186 is a deficient number, since it is larger than the sum of its proper divisors (111373706805358).

216384969911186 is a wasteful number, since it uses less digits than its factorization.

216384969911186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628890385.

The product of its digits is 241864704, while the sum is 74.

The spelling of 216384969911186 in words is "two hundred sixteen trillion, three hundred eighty-four billion, nine hundred sixty-nine million, nine hundred eleven thousand, one hundred eighty-six".