216151044321 has 24 divisors (see below), whose sum is σ = 306204501600. Its totient is φ = 135600773632.

The previous prime is 216151044311. The next prime is 216151044337. The reversal of 216151044321 is 123440151612.

It is not a de Polignac number, because 216151044321 - 2¹¹ = 216151042273 is a prime.

It is a super-2 number, since 2×216151044321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216151044311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5963365 + ... + 5999501.

It is an arithmetic number, because the mean of its divisors is an integer number (12758520900).

Almost surely, 2^216151044321 is an apocalyptic number.

It is an amenable number.

216151044321 is a deficient number, since it is larger than the sum of its proper divisors (90053457279).

216151044321 is a wasteful number, since it uses less digits than its factorization.

216151044321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43073 (or 43056 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 216151044321 its reverse (123440151612), we get a palindrome (339591195933).

The spelling of 216151044321 in words is "two hundred sixteen billion, one hundred fifty-one million, forty-four thousand, three hundred twenty-one".