216280656108 has 72 divisors (see below), whose sum is σ = 596467457040. Its totient is φ = 65533311360.

The previous prime is 216280656043. The next prime is 216280656131. The reversal of 216280656108 is 801656082612.

216280656108 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 80 + 6 + 561 + 0 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5679066 + ... + 5717022.

Almost surely, 2^216280656108 is an apocalyptic number.

It is an amenable number.

216280656108 is an abundant number, since it is smaller than the sum of its proper divisors (380186800932).

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

216280656108 is a wasteful number, since it uses less digits than its factorization.

216280656108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52367 (or 52362 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 216280656108 in words is "two hundred sixteen billion, two hundred eighty million, six hundred fifty-six thousand, one hundred eight".