216565122016 has 12 divisors (see below), whose sum is σ = 426362584032. Its totient is φ = 108282560992.

The previous prime is 216565122013. The next prime is 216565122031. The reversal of 216565122016 is 610221565612.

It is a super-3 number, since 3×216565122016³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216565122013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383830000 + ... + 3383830063.

It is an arithmetic number, because the mean of its divisors is an integer number (35530215336).

Almost surely, 2^216565122016 is an apocalyptic number.

It is an amenable number.

216565122016 is a deficient number, since it is larger than the sum of its proper divisors (209797462016).

216565122016 is an equidigital number, since it uses as much as digits as its factorization.

216565122016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767660073 (or 6767660065 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 216565122016 its reverse (610221565612), we get a palindrome (826786687628).

The spelling of 216565122016 in words is "two hundred sixteen billion, five hundred sixty-five million, one hundred twenty-two thousand, sixteen".