6655380911 has 4 divisors (see below), whose sum is σ = 6655544112. Its totient is φ = 6655217712.

The previous prime is 6655380899. The next prime is 6655380923. The reversal of 6655380911 is 1190835566.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (6655380899) and next prime (6655380923).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6655380911 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 (6655380931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38126 + ... + 121508.

It is an arithmetic number, because the mean of its divisors is an integer number (1663886028).

Almost surely, 2^6655380911 is an apocalyptic number.

6655380911 is a deficient number, since it is larger than the sum of its proper divisors (163201).

6655380911 is an equidigital number, since it uses as much as digits as its factorization.

6655380911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163200.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 6655380911 is about 81580.5179623174. The cubic root of 6655380911 is about 1881.0094276375.

The spelling of 6655380911 in words is "six billion, six hundred fifty-five million, three hundred eighty thousand, nine hundred eleven".