216512594009 has 8 divisors (see below), whose sum is σ = 218744517600. Its totient is φ = 214284530656.

The previous prime is 216512594003. The next prime is 216512594021. The reversal of 216512594009 is 900495215612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216512594009 - 2²⁸ = 216244158553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216512594003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852239 + ... + 1076724.

It is an arithmetic number, because the mean of its divisors is an integer number (27343064700).

Almost surely, 2^216512594009 is an apocalyptic number.

It is an amenable number.

216512594009 is a deficient number, since it is larger than the sum of its proper divisors (2231923591).

216512594009 is a wasteful number, since it uses less digits than its factorization.

216512594009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930119.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 216512594009 in words is "two hundred sixteen billion, five hundred twelve million, five hundred ninety-four thousand, nine".