6556165056611 has 4 divisors (see below), whose sum is σ = 6901226375400. Its totient is φ = 6211103737824.

The previous prime is 6556165056607. The next prime is 6556165056659. The reversal of 6556165056611 is 1166505616556.

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 6556165056611 - 2² = 6556165056607 is a prime.

It is a super-3 number, since 3×6556165056611³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556165056671) 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, 172530659366 + ... + 172530659403.

It is an arithmetic number, because the mean of its divisors is an integer number (1725306593850).

Almost surely, 2^{6556165056611} is an apocalyptic number.

6556165056611 is a deficient number, since it is larger than the sum of its proper divisors (345061318789).

6556165056611 is a wasteful number, since it uses less digits than its factorization.

6556165056611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345061318788.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 6556165056611 in words is "six trillion, five hundred fifty-six billion, one hundred sixty-five million, fifty-six thousand, six hundred eleven".