6655522556666 has 32 divisors (see below), whose sum is σ = 10776983834880. Its totient is φ = 3074440634496.

The previous prime is 6655522556591. The next prime is 6655522556681. The reversal of 6655522556666 is 6666552255566.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 6655522556666 parts by 3648430 straight cuts.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14038406 + ... + 14504753.

It is an arithmetic number, because the mean of its divisors is an integer number (336780744840).

Almost surely, 2^{6655522556666} is an apocalyptic number.

6655522556666 is a deficient number, since it is larger than the sum of its proper divisors (4121461278214).

6655522556666 is a wasteful number, since it uses less digits than its factorization.

6655522556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28543358.

The product of its digits is 583200000, while the sum is 65.

The spelling of 6655522556666 in words is "six trillion, six hundred fifty-five billion, five hundred twenty-two million, five hundred fifty-six thousand, six hundred sixty-six".