216363780216 has 48 divisors (see below), whose sum is σ = 586669168800. Its totient is φ = 72037084032.

The previous prime is 216363780119. The next prime is 216363780299. The reversal of 216363780216 is 612087363612.

216363780216 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 637 + 8 + 0 + 2 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1691536 + ... + 1814943.

It is an arithmetic number, because the mean of its divisors is an integer number (12222274350).

Almost surely, 2^216363780216 is an apocalyptic number.

It is an amenable number.

216363780216 is an abundant number, since it is smaller than the sum of its proper divisors (370305388584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216363780216 is a wasteful number, since it uses less digits than its factorization.

216363780216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507348 (or 3507341 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 216363780216 in words is "two hundred sixteen billion, three hundred sixty-three million, seven hundred eighty thousand, two hundred sixteen".