6556680011 has 4 divisors (see below), whose sum is σ = 7493348592. Its totient is φ = 5620011432.

The previous prime is 6556679993. The next prime is 6556680047. The reversal of 6556680011 is 1100866556.

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

It is not a de Polignac number, because 6556680011 - 2¹⁰ = 6556678987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556680211) 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, 468334280 + ... + 468334293.

It is an arithmetic number, because the mean of its divisors is an integer number (1873337148).

Almost surely, 2^6556680011 is an apocalyptic number.

6556680011 is a deficient number, since it is larger than the sum of its proper divisors (936668581).

6556680011 is an equidigital number, since it uses as much as digits as its factorization.

6556680011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936668580.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 6556680011 is about 80973.3290102365. The cubic root of 6556680011 is about 1871.6644708256.

The spelling of 6556680011 in words is "six billion, five hundred fifty-six million, six hundred eighty thousand, eleven".