216689690112 has 160 divisors (see below), whose sum is σ = 663434323200. Its totient is φ = 61564919808.

The previous prime is 216689690083. The next prime is 216689690143. The reversal of 216689690112 is 211096986612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868314 + ... + 1980902.

It is an arithmetic number, because the mean of its divisors is an integer number (4146464520).

Almost surely, 2^216689690112 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 216689690112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331717161600).

216689690112 is an abundant number, since it is smaller than the sum of its proper divisors (446744633088).

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

216689690112 is a wasteful number, since it uses less digits than its factorization.

216689690112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112796 (or 112780 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 216689690112 in words is "two hundred sixteen billion, six hundred eighty-nine million, six hundred ninety thousand, one hundred twelve".