216504368966 has 8 divisors (see below), whose sum is σ = 325263195864. Its totient is φ = 108083303680.

The previous prime is 216504368963. The next prime is 216504368987. The reversal of 216504368966 is 669863405612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216504368963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84438800 + ... + 84441363.

It is an arithmetic number, because the mean of its divisors is an integer number (40657899483).

Almost surely, 2^216504368966 is an apocalyptic number.

216504368966 is a deficient number, since it is larger than the sum of its proper divisors (108758826898).

216504368966 is a wasteful number, since it uses less digits than its factorization.

216504368966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168880806.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 216504368966 in words is "two hundred sixteen billion, five hundred four million, three hundred sixty-eight thousand, nine hundred sixty-six".