1216364100616 has 64 divisors (see below), whose sum is σ = 2760404572800. Its totient is φ = 490529928192.

The previous prime is 1216364100613. The next prime is 1216364100641. The reversal of 1216364100616 is 6160014636121.

It is not an unprimeable number, because it can be changed into a prime (1216364100613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423770 + ... + 4690678.

It is an arithmetic number, because the mean of its divisors is an integer number (43131321450).

Almost surely, 2^{1216364100616} is an apocalyptic number.

It is an amenable number.

1216364100616 is an abundant number, since it is smaller than the sum of its proper divisors (1544040472184).

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

1216364100616 is a wasteful number, since it uses less digits than its factorization.

1216364100616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271726 (or 271722 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 1216364100616 its reverse (6160014636121), we get a palindrome (7376378736737).

The spelling of 1216364100616 in words is "one trillion, two hundred sixteen billion, three hundred sixty-four million, one hundred thousand, six hundred sixteen".