216907680288 has 96 divisors (see below), whose sum is σ = 622333526976. Its totient is φ = 65744667648.

The previous prime is 216907680277. The next prime is 216907680323. The reversal of 216907680288 is 882086709612.

216907680288 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213431 + ... + 1380662.

It is an arithmetic number, because the mean of its divisors is an integer number (6482640906).

Almost surely, 2^216907680288 is an apocalyptic number.

It is an amenable number.

216907680288 is an abundant number, since it is smaller than the sum of its proper divisors (405425846688).

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

216907680288 is a wasteful number, since it uses less digits than its factorization.

216907680288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594186 (or 2594178 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 216907680288 in words is "two hundred sixteen billion, nine hundred seven million, six hundred eighty thousand, two hundred eighty-eight".