1216602430564 has 48 divisors (see below), whose sum is σ = 2194108107520. Its totient is φ = 589828884480.

The previous prime is 1216602430553. The next prime is 1216602430567. The reversal of 1216602430564 is 4650342066121.

It is not an unprimeable number, because it can be changed into a prime (1216602430567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191980804 + ... + 191987140.

Almost surely, 2^{1216602430564} is an apocalyptic number.

It is an amenable number.

1216602430564 is a deficient number, since it is larger than the sum of its proper divisors (977505676956).

1216602430564 is a wasteful number, since it uses less digits than its factorization.

1216602430564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628 (or 10626 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 1216602430564 its reverse (4650342066121), we get a palindrome (5866944496685).

The spelling of 1216602430564 in words is "one trillion, two hundred sixteen billion, six hundred two million, four hundred thirty thousand, five hundred sixty-four".