216522543140 has 48 divisors (see below), whose sum is σ = 475171183872. Its totient is φ = 82794948096.

The previous prime is 216522543121. The next prime is 216522543151. The reversal of 216522543140 is 41345225612.

216522543140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×216522543140³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 216522543140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637989 + ... + 2718828.

It is an arithmetic number, because the mean of its divisors is an integer number (9899399664).

Almost surely, 2^216522543140 is an apocalyptic number.

216522543140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216522543140 is an abundant number, since it is smaller than the sum of its proper divisors (258648640732).

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

216522543140 is a wasteful number, since it uses less digits than its factorization.

216522543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356916 (or 5356914 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 216522543140 its reverse (41345225612), we get a palindrome (257867768752).

The spelling of 216522543140 in words is "two hundred sixteen billion, five hundred twenty-two million, five hundred forty-three thousand, one hundred forty".