56105005111011 has 12 divisors (see below), whose sum is σ = 81057838753320. Its totient is φ = 37395363287520.

The previous prime is 56105005111007. The next prime is 56105005111091. The reversal of 56105005111011 is 11011150050165.

56105005111011 is a `hidden beast` number, since 5 + 6 + 1 + 0 + 500 + 51 + 1 + 101 + 1 = 666.

It is not a de Polignac number, because 56105005111011 - 2² = 56105005111007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56105005111091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664409866 + ... + 664494303.

It is an arithmetic number, because the mean of its divisors is an integer number (6754819896110).

Almost surely, 2^{56105005111011} is an apocalyptic number.

56105005111011 is a deficient number, since it is larger than the sum of its proper divisors (24952833642309).

56105005111011 is a wasteful number, since it uses less digits than its factorization.

56105005111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328908866 (or 1328908863 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 27.

Adding to 56105005111011 its reverse (11011150050165), we get a palindrome (67116155161176).

The spelling of 56105005111011 in words is "fifty-six trillion, one hundred five billion, five million, one hundred eleven thousand, eleven".