2111616616061 has 8 divisors (see below), whose sum is σ = 2168936740320. Its totient is φ = 2054309618448.

The previous prime is 2111616615973. The next prime is 2111616616063. The reversal of 2111616616061 is 1606166161112.

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 a de Polignac number, because none of the positive numbers 2^k-2111616616061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111616616063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2955131 + ... + 3599448.

It is an arithmetic number, because the mean of its divisors is an integer number (271117092540).

Almost surely, 2^{2111616616061} is an apocalyptic number.

It is an amenable number.

2111616616061 is a deficient number, since it is larger than the sum of its proper divisors (57320124259).

2111616616061 is an equidigital number, since it uses as much as digits as its factorization.

2111616616061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563323.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 2111616616061 in words is "two trillion, one hundred eleven billion, six hundred sixteen million, six hundred sixteen thousand, sixty-one".