216205630417250 has 128 divisors (see below), whose sum is σ = 436182265958400. Its totient is φ = 80012494848000.

The previous prime is 216205630417243. The next prime is 216205630417267. The reversal of 216205630417250 is 52714036502612.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 347098082 + ... + 347720418.

It is an arithmetic number, because the mean of its divisors is an integer number (3407673952800).

Almost surely, 2^{216205630417250} is an apocalyptic number.

216205630417250 is an abundant number, since it is smaller than the sum of its proper divisors (219976635541150).

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

216205630417250 is a wasteful number, since it uses less digits than its factorization.

216205630417250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624357 (or 624347 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

Adding to 216205630417250 its reverse (52714036502612), we get a palindrome (268919666919862).

The spelling of 216205630417250 in words is "two hundred sixteen trillion, two hundred five billion, six hundred thirty million, four hundred seventeen thousand, two hundred fifty".