2271216815648 has 24 divisors (see below), whose sum is σ = 4877954298000. Its totient is φ = 1032371279680.

The previous prime is 2271216815597. The next prime is 2271216815663. The reversal of 2271216815648 is 8465186121722.

It is a super-3 number, since 3×2271216815648³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2271216815648.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3226159898 + ... + 3226160601.

It is an arithmetic number, because the mean of its divisors is an integer number (203248095750).

Almost surely, 2^{2271216815648} is an apocalyptic number.

It is an amenable number.

2271216815648 is an abundant number, since it is smaller than the sum of its proper divisors (2606737482352).

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

2271216815648 is a wasteful number, since it uses less digits than its factorization.

2271216815648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452320520 (or 6452320512 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The spelling of 2271216815648 in words is "two trillion, two hundred seventy-one billion, two hundred sixteen million, eight hundred fifteen thousand, six hundred forty-eight".