216506233000 has 32 divisors (see below), whose sum is σ = 506624587560. Its totient is φ = 86602492800.

The previous prime is 216506232997. The next prime is 216506233051. The reversal of 216506233000 is 332605612.

It can be written as a sum of positive squares in 4 ways, for example, as 22555834596 + 193950398404 = 150186^2 + 440398^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216506233000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108252117 + ... + 108254116.

Almost surely, 2^216506233000 is an apocalyptic number.

216506233000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216506233000 is an abundant number, since it is smaller than the sum of its proper divisors (290118354560).

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

216506233000 is a wasteful number, since it uses less digits than its factorization.

216506233000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216506254 (or 216506240 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 216506233000 its reverse (332605612), we get a palindrome (216838838612).

The spelling of 216506233000 in words is "two hundred sixteen billion, five hundred six million, two hundred thirty-three thousand".