1646163302216 has 8 divisors (see below), whose sum is σ = 3086556191670. Its totient is φ = 823081651104.

The previous prime is 1646163302197. The next prime is 1646163302227. The reversal of 1646163302216 is 6122033616461.

It can be written as a sum of positive squares in only one way, i.e., 1303182064900 + 342981237316 = 1141570^2 + 585646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102885206381 + ... + 102885206396.

Almost surely, 2^{1646163302216} is an apocalyptic number.

It is an amenable number.

1646163302216 is a deficient number, since it is larger than the sum of its proper divisors (1440392889454).

1646163302216 is a wasteful number, since it uses less digits than its factorization.

1646163302216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205770412783 (or 205770412779 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

Adding to 1646163302216 its reverse (6122033616461), we get a palindrome (7768196918677).

The spelling of 1646163302216 in words is "one trillion, six hundred forty-six billion, one hundred sixty-three million, three hundred two thousand, two hundred sixteen".