5616111165661 has 8 divisors (see below), whose sum is σ = 5946556904640. Its totient is φ = 5285675011008.

The previous prime is 5616111165649. The next prime is 5616111165697. The reversal of 5616111165661 is 1665611116165.

It is a happy number.

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 5616111165661 - 2¹³ = 5616111157469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5616111165631) 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, 1171791 + ... + 3550396.

It is an arithmetic number, because the mean of its divisors is an integer number (743319613080).

Almost surely, 2^{5616111165661} is an apocalyptic number.

It is an amenable number.

5616111165661 is a deficient number, since it is larger than the sum of its proper divisors (330445738979).

5616111165661 is a wasteful number, since it uses less digits than its factorization.

5616111165661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792163.

The product of its digits is 194400, while the sum is 46.

The spelling of 5616111165661 in words is "five trillion, six hundred sixteen billion, one hundred eleven million, one hundred sixty-five thousand, six hundred sixty-one".