216720276016 has 20 divisors (see below), whose sum is σ = 422676304624. Its totient is φ = 107642520000.

The previous prime is 216720276011. The next prime is 216720276049. The reversal of 216720276016 is 610672027612.

It is a self number, because there is not a number n which added to its sum of digits gives 216720276016.

It is not an unprimeable number, because it can be changed into a prime (216720276011) 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, 44848635 + ... + 44853466.

Almost surely, 2^216720276016 is an apocalyptic number.

It is an amenable number.

216720276016 is a deficient number, since it is larger than the sum of its proper divisors (205956028608).

216720276016 is a wasteful number, since it uses less digits than its factorization.

216720276016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89702260 (or 89702254 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 216720276016 in words is "two hundred sixteen billion, seven hundred twenty million, two hundred seventy-six thousand, sixteen".