1217963632016 has 20 divisors (see below), whose sum is σ = 2364333928524. Its totient is φ = 607812940800.

The previous prime is 1217963632003. The next prime is 1217963632019. The reversal of 1217963632016 is 6102363697121.

It can be written as a sum of positive squares in 2 ways, for example, as 690893440000 + 527070192016 = 831200^2 + 725996^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1217963632019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73046105 + ... + 73062776.

Almost surely, 2^{1217963632016} is an apocalyptic number.

1217963632016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1217963632016 is a deficient number, since it is larger than the sum of its proper divisors (1146370296508).

1217963632016 is a wasteful number, since it uses less digits than its factorization.

1217963632016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146109410 (or 146109404 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 1217963632016 in words is "one trillion, two hundred seventeen billion, nine hundred sixty-three million, six hundred thirty-two thousand, sixteen".