216553166912 has 56 divisors (see below), whose sum is σ = 435467760000. Its totient is φ = 106830936576.

The previous prime is 216553166903. The next prime is 216553166941. The reversal of 216553166912 is 219661355612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7564658 + ... + 7593230.

It is an arithmetic number, because the mean of its divisors is an integer number (7776210000).

Almost surely, 2^216553166912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216553166912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217733880000).

216553166912 is an abundant number, since it is smaller than the sum of its proper divisors (218914593088).

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

216553166912 is a wasteful number, since it uses less digits than its factorization.

216553166912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30163 (or 30153 counting only the distinct ones).

The product of its digits is 583200, while the sum is 47.

The spelling of 216553166912 in words is "two hundred sixteen billion, five hundred fifty-three million, one hundred sixty-six thousand, nine hundred twelve".