216804584034693 has 72 divisors (see below), whose sum is σ = 329771440705824. Its totient is φ = 137154406567680.

The previous prime is 216804584034613. The next prime is 216804584034697. The reversal of 216804584034693 is 396430485408612.

216804584034693 is a `hidden beast` number, since 2 + 1 + 6 + 8 + 0 + 4 + 584 + 0 + 3 + 46 + 9 + 3 = 666.

It is not a de Polignac number, because 216804584034693 - 2¹³ = 216804584026501 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 216804584034693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216804584034697) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1725717346 + ... + 1725842972.

It is an arithmetic number, because the mean of its divisors is an integer number (4580158898692).

Almost surely, 2^{216804584034693} is an apocalyptic number.

It is an amenable number.

216804584034693 is a deficient number, since it is larger than the sum of its proper divisors (112966856671131).

216804584034693 is a wasteful number, since it uses less digits than its factorization.

216804584034693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128835 (or 128791 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 216804584034693 in words is "two hundred sixteen trillion, eight hundred four billion, five hundred eighty-four million, thirty-four thousand, six hundred ninety-three".