6566576121 has 28 divisors (see below), whose sum is σ = 11251849152. Its totient is φ = 3752326296.

The previous prime is 6566576099. The next prime is 6566576131. The reversal of 6566576121 is 1216756656.

6566576121 is a `hidden beast` number, since 6 + 5 + 66 + 576 + 12 + 1 = 666.

6566576121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6566576121 - 2⁶ = 6566576057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6566576131) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 638301 + ... + 648506.

Almost surely, 2^6566576121 is an apocalyptic number.

It is an amenable number.

6566576121 is a deficient number, since it is larger than the sum of its proper divisors (4685273031).

6566576121 is an equidigital number, since it uses as much as digits as its factorization.

6566576121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286832 (or 1286817 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 6566576121 is about 81034.4131897060. The cubic root of 6566576121 is about 1872.6056426096.

The spelling of 6566576121 in words is "six billion, five hundred sixty-six million, five hundred seventy-six thousand, one hundred twenty-one".