216051656 has 16 divisors (see below), whose sum is σ = 409978800. Its totient is φ = 106723984.

The previous prime is 216051643. The next prime is 216051659. The reversal of 216051656 is 656150612.

216051656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216051659) 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, 162026 + ... + 163353.

It is an arithmetic number, because the mean of its divisors is an integer number (25623675).

Almost surely, 2^216051656 is an apocalyptic number.

It is an amenable number.

216051656 is a deficient number, since it is larger than the sum of its proper divisors (193927144).

216051656 is a wasteful number, since it uses less digits than its factorization.

216051656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325468 (or 325464 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 216051656 is about 14698.6957244512. The cubic root of 216051656 is about 600.0478258173.

The spelling of 216051656 in words is "two hundred sixteen million, fifty-one thousand, six hundred fifty-six".