5565111660611 has 4 divisors (see below), whose sum is σ = 5565719812224. Its totient is φ = 5564503509000.

The previous prime is 5565111660539. The next prime is 5565111660637. The reversal of 5565111660611 is 1160661115655.

5565111660611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5565111660611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5565111660671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304062080 + ... + 304080381.

It is an arithmetic number, because the mean of its divisors is an integer number (1391429953056).

Almost surely, 2^{5565111660611} is an apocalyptic number.

5565111660611 is a deficient number, since it is larger than the sum of its proper divisors (608151613).

5565111660611 is an equidigital number, since it uses as much as digits as its factorization.

5565111660611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608151612.

The product of its (nonzero) digits is 162000, while the sum is 44.

It can be divided in two parts, 556511 and 1660611, that added together give a palindrome (2217122).

The spelling of 5565111660611 in words is "five trillion, five hundred sixty-five billion, one hundred eleven million, six hundred sixty thousand, six hundred eleven".