216443944192 has 72 divisors (see below), whose sum is σ = 494521566336. Its totient is φ = 92619134976.

The previous prime is 216443944183. The next prime is 216443944243. The reversal of 216443944192 is 291449344612.

It is a super-2 number, since 2×216443944192² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1077693 + ... + 1262659.

It is an arithmetic number, because the mean of its divisors is an integer number (6868355088).

Almost surely, 2^216443944192 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 216443944192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247260783168).

216443944192 is an abundant number, since it is smaller than the sum of its proper divisors (278077622144).

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

216443944192 is an equidigital number, since it uses as much as digits as its factorization.

216443944192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185643 (or 185629 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 49.

The spelling of 216443944192 in words is "two hundred sixteen billion, four hundred forty-three million, nine hundred forty-four thousand, one hundred ninety-two".