6556659611 has 4 divisors (see below), whose sum is σ = 6841731792. Its totient is φ = 6271587432.

The previous prime is 6556659583. The next prime is 6556659643. The reversal of 6556659611 is 1169566556.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6556659611 - 2⁶ = 6556659547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6556659611.

It is not an unprimeable number, because it can be changed into a prime (6556659211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142536056 + ... + 142536101.

It is an arithmetic number, because the mean of its divisors is an integer number (1710432948).

Almost surely, 2^6556659611 is an apocalyptic number.

6556659611 is a deficient number, since it is larger than the sum of its proper divisors (285072181).

6556659611 is a wasteful number, since it uses less digits than its factorization.

6556659611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285072180.

The product of its digits is 1458000, while the sum is 50.

The square root of 6556659611 is about 80973.2030427351. The cubic root of 6556659611 is about 1871.6625297012.

The spelling of 6556659611 in words is "six billion, five hundred fifty-six million, six hundred fifty-nine thousand, six hundred eleven".