216565481276 has 6 divisors (see below), whose sum is σ = 378989592240. Its totient is φ = 108282740636.

The previous prime is 216565481273. The next prime is 216565481281. The reversal of 216565481276 is 672184565612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216565481273) 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 as a sum of consecutive naturals, namely, 27070685156 + ... + 27070685163.

It is an arithmetic number, because the mean of its divisors is an integer number (63164932040).

Almost surely, 2^216565481276 is an apocalyptic number.

It is an amenable number.

216565481276 is a deficient number, since it is larger than the sum of its proper divisors (162424110964).

216565481276 is a wasteful number, since it uses less digits than its factorization.

216565481276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54141370323 (or 54141370321 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 53.

The spelling of 216565481276 in words is "two hundred sixteen billion, five hundred sixty-five million, four hundred eighty-one thousand, two hundred seventy-six".