216441434212 has 6 divisors (see below), whose sum is σ = 378772509878. Its totient is φ = 108220717104.

The previous prime is 216441434137. The next prime is 216441434269. The reversal of 216441434212 is 212434144612.

It can be written as a sum of positive squares in only one way, i.e., 185671362816 + 30770071396 = 430896^2 + 175414^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27055179273 + ... + 27055179280.

Almost surely, 2^216441434212 is an apocalyptic number.

It is an amenable number.

216441434212 is a deficient number, since it is larger than the sum of its proper divisors (162331075666).

216441434212 is a wasteful number, since it uses less digits than its factorization.

216441434212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54110358557 (or 54110358555 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

Adding to 216441434212 its reverse (212434144612), we get a palindrome (428875578824).

The spelling of 216441434212 in words is "two hundred sixteen billion, four hundred forty-one million, four hundred thirty-four thousand, two hundred twelve".