216243498272 has 24 divisors (see below), whose sum is σ = 425884878972. Its totient is φ = 108082259200.

The previous prime is 216243498271. The next prime is 216243498281. The reversal of 216243498272 is 272894342612.

It can be written as a sum of positive squares in 2 ways, for example, as 215106729616 + 1136768656 = 463796^2 + 33716^2 .

It is a super-2 number, since 2×216243498272² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216243498272.

It is not an unprimeable number, because it can be changed into a prime (216243498271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144979 + ... + 1320402.

Almost surely, 2^216243498272 is an apocalyptic number.

It is an amenable number.

216243498272 is a deficient number, since it is larger than the sum of its proper divisors (209641380700).

216243498272 is a wasteful number, since it uses less digits than its factorization.

216243498272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468132 (or 2468124 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The spelling of 216243498272 in words is "two hundred sixteen billion, two hundred forty-three million, four hundred ninety-eight thousand, two hundred seventy-two".