216480880903806 has 48 divisors (see below), whose sum is σ = 475752331536768. Its totient is φ = 71135216802000.

The previous prime is 216480880903751. The next prime is 216480880903871. The reversal of 216480880903806 is 608309088084612.

216480880903806 is a `hidden beast` number, since 2 + 16 + 4 + 80 + 8 + 80 + 90 + 380 + 6 = 666.

It is a Curzon number.

It is a congruent number.

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, 303640596 + ... + 304352711.

It is an arithmetic number, because the mean of its divisors is an integer number (9911506907016).

Almost surely, 2^{216480880903806} is an apocalyptic number.

216480880903806 is an abundant number, since it is smaller than the sum of its proper divisors (259271450632962).

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

216480880903806 is a wasteful number, since it uses less digits than its factorization.

216480880903806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607993597 (or 607993594 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 216480880903806 in words is "two hundred sixteen trillion, four hundred eighty billion, eight hundred eighty million, nine hundred three thousand, eight hundred six".