216235434252 has 24 divisors (see below), whose sum is σ = 504557069632. Its totient is φ = 72077374800.

The previous prime is 216235434241. The next prime is 216235434253. The reversal of 216235434252 is 252434532612.

It is a self number, because there is not a number n which added to its sum of digits gives 216235434252.

It is not an unprimeable number, because it can be changed into a prime (216235434253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190727 + ... + 1360257.

Almost surely, 2^216235434252 is an apocalyptic number.

It is an amenable number.

216235434252 is an abundant number, since it is smaller than the sum of its proper divisors (288321635380).

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

216235434252 is a wasteful number, since it uses less digits than its factorization.

216235434252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275829 (or 275827 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

Adding to 216235434252 its reverse (252434532612), we get a palindrome (468669966864).

The spelling of 216235434252 in words is "two hundred sixteen billion, two hundred thirty-five million, four hundred thirty-four thousand, two hundred fifty-two".