216545603056 has 20 divisors (see below), whose sum is σ = 421152388272. Its totient is φ = 107861115776.

The previous prime is 216545603047. The next prime is 216545603089. The reversal of 216545603056 is 650306545612.

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, 25726021 + ... + 25734436.

Almost surely, 2^216545603056 is an apocalyptic number.

It is an amenable number.

216545603056 is a deficient number, since it is larger than the sum of its proper divisors (204606785216).

216545603056 is a wasteful number, since it uses less digits than its factorization.

216545603056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51460728 (or 51460722 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 216545603056 in words is "two hundred sixteen billion, five hundred forty-five million, six hundred three thousand, fifty-six".