6555566656210 has 64 divisors (see below), whose sum is σ = 13873975436160. Its totient is φ = 2198721530880.

The previous prime is 6555566656207. The next prime is 6555566656253. The reversal of 6555566656210 is 126566655556.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20247 + ... + 3620986.

It is an arithmetic number, because the mean of its divisors is an integer number (216780866190).

Almost surely, 2^{6555566656210} is an apocalyptic number.

6555566656210 is an abundant number, since it is smaller than the sum of its proper divisors (7318408779950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6555566656210 is a wasteful number, since it uses less digits than its factorization.

6555566656210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642523.

The product of its (nonzero) digits is 48600000, while the sum is 58.

The spelling of 6555566656210 in words is "six trillion, five hundred fifty-five billion, five hundred sixty-six million, six hundred fifty-six thousand, two hundred ten".