216651984214 has 8 divisors (see below), whose sum is σ = 324998205840. Its totient is φ = 108319248936.

The previous prime is 216651984181. The next prime is 216651984313. The reversal of 216651984214 is 412489156612.

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

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, 3331329 + ... + 3395740.

It is an arithmetic number, because the mean of its divisors is an integer number (40624775730).

Almost surely, 2^216651984214 is an apocalyptic number.

216651984214 is a deficient number, since it is larger than the sum of its proper divisors (108346221626).

216651984214 is a wasteful number, since it uses less digits than its factorization.

216651984214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743174.

The product of its digits is 829440, while the sum is 49.

The spelling of 216651984214 in words is "two hundred sixteen billion, six hundred fifty-one million, nine hundred eighty-four thousand, two hundred fourteen".