2116560656111 has 8 divisors (see below), whose sum is σ = 2430500275200. Its totient is φ = 1822875206040.

The previous prime is 2116560656099. The next prime is 2116560656113. The reversal of 2116560656111 is 1116560656112.

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 2116560656111 - 2¹⁸ = 2116560393967 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 (2116560656113) 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, 5063542031 + ... + 5063542448.

It is an arithmetic number, because the mean of its divisors is an integer number (303812534400).

Almost surely, 2^{2116560656111} is an apocalyptic number.

2116560656111 is a deficient number, since it is larger than the sum of its proper divisors (313939619089).

2116560656111 is a wasteful number, since it uses less digits than its factorization.

2116560656111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10127084509.

The product of its (nonzero) digits is 64800, while the sum is 41.

Subtracting from 2116560656111 its reverse (1116560656112), we obtain a palindrome (999999999999).

The spelling of 2116560656111 in words is "two trillion, one hundred sixteen billion, five hundred sixty million, six hundred fifty-six thousand, one hundred eleven".