6566942853 has 6 divisors (see below), whose sum is σ = 9485584134. Its totient is φ = 4377961896.

The previous prime is 6566942821. The next prime is 6566942857. The reversal of 6566942853 is 3582496656.

6566942853 is a `hidden beast` number, since 6 + 566 + 9 + 4 + 28 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4159863009 + 2407079844 = 64497^2 + 49062^2 .

It is not a de Polignac number, because 6566942853 - 2⁵ = 6566942821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6566942853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566942857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364830150 + ... + 364830167.

It is an arithmetic number, because the mean of its divisors is an integer number (1580930689).

Almost surely, 2^6566942853 is an apocalyptic number.

It is an amenable number.

6566942853 is a deficient number, since it is larger than the sum of its proper divisors (2918641281).

6566942853 is a wasteful number, since it uses less digits than its factorization.

6566942853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729660323 (or 729660320 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 6566942853 is about 81036.6759745240. The cubic root of 6566942853 is about 1872.6405025638.

The spelling of 6566942853 in words is "six billion, five hundred sixty-six million, nine hundred forty-two thousand, eight hundred fifty-three".