216342142065 has 192 divisors, whose sum is σ = 443371968000. Its totient is φ = 95558234112.

The previous prime is 216342142063. The next prime is 216342142091. The reversal of 216342142065 is 560241243612.

216342142065 is a `hidden beast` number, since 2 + 1 + 634 + 2 + 14 + 2 + 0 + 6 + 5 = 666.

It is not a de Polignac number, because 216342142065 - 2¹ = 216342142063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216342142063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 279873019 + ... + 279873791.

It is an arithmetic number, because the mean of its divisors is an integer number (2309229000).

Almost surely, 2^216342142065 is an apocalyptic number.

It is an amenable number.

216342142065 is an abundant number, since it is smaller than the sum of its proper divisors (227029825935).

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

216342142065 is a wasteful number, since it uses less digits than its factorization.

216342142065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 216342142065 its reverse (560241243612), we get a palindrome (776583385677).

The spelling of 216342142065 in words is "two hundred sixteen billion, three hundred forty-two million, one hundred forty-two thousand, sixty-five".