1216118385641 has 8 divisors (see below), whose sum is σ = 1216684627200. Its totient is φ = 1215552238960.

The previous prime is 1216118385617. The next prime is 1216118385673. The reversal of 1216118385641 is 1465838116121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1216118385641 - 2⁶ = 1216118385577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216118385241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40768430 + ... + 40798248.

It is an arithmetic number, because the mean of its divisors is an integer number (152085578400).

Almost surely, 2^{1216118385641} is an apocalyptic number.

It is an amenable number.

1216118385641 is a deficient number, since it is larger than the sum of its proper divisors (566241559).

1216118385641 is a wasteful number, since it uses less digits than its factorization.

1216118385641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47439.

The product of its digits is 276480, while the sum is 47.

The spelling of 1216118385641 in words is "one trillion, two hundred sixteen billion, one hundred eighteen million, three hundred eighty-five thousand, six hundred forty-one".