6566466260656 has 80 divisors (see below), whose sum is σ = 13320668994048. Its totient is φ = 3129849676800.

The previous prime is 6566466260623. The next prime is 6566466260659. The reversal of 6566466260656 is 6560626646656.

It is not an unprimeable number, because it can be changed into a prime (6566466260659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336197611 + ... + 336217141.

Almost surely, 2^{6566466260656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566466260656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6660334497024).

6566466260656 is an abundant number, since it is smaller than the sum of its proper divisors (6754202733392).

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

6566466260656 is a wasteful number, since it uses less digits than its factorization.

6566466260656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22610 (or 22604 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 64.

The spelling of 6566466260656 in words is "six trillion, five hundred sixty-six billion, four hundred sixty-six million, two hundred sixty thousand, six hundred fifty-six".